I have spent the last three summers hauling a small sedan behind a 32-foot motorhome, and I can tell you the difference between a frustrating trip and a smooth one comes down to one piece of equipment: the tow dolly. After burning through one cheap unit and burning out two sets of tires on another, our team tested eight of the most popular tow dollies on the market to help you skip the learning curve and get straight to a reliable rig.
This guide covers the best tow dollies available right now, including heavy-duty folding models for full-size cars, lightweight aluminum options for low-clearance vehicles, electric-powered movers for tight spaces, and budget-friendly trailer dollies for short hauls. I have included real specs, verified ratings, and the kind of honest feedback you only get from owners who log thousands of miles.
Whether you are a full-time RVer heading into September or a weekend warrior planning a single cross-country trip, the best tow dolly for your setup depends on your towed vehicle weight, your storage space, and whether you prefer surge brakes or electric braking. Let us walk through the picks.
Top 3 Picks for Best Tow Dollies in September
Best Tow Dollies in 2026
| Product | Specifications | Action |
|---|---|---|
| Demco Kar Kaddy SS Space Saver |
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| Mytee Collins Aluminum Hi-Speed |
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| MaxxHaul 70225 Trailer Dolly |
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 SuperHandy Electric Trailer Dolly |
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 Tow Tuff TMD-1000C2 Trailer Dolly |
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 Tow Tuff TMD-800ATV Trailer Dolly |
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 MaxxHaul 70881 Dual-Pull Trailer Dolly |
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 Demco 9713093 KarKaddy X |
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1. Demco Kar Kaddy SS Space Saver – Best Folding Tow Dolly
Dethmers Manufacturing Company KK460SS Space Saver Kar Kaddy
4800 lb capacity
675 lb weight
Folding design
100 in long
Pros
- Very solid construction
- Space-saving fold to 67 inches
- Brakes worked great on long trips
- 4800 lb load capacity
- Good fit and finish
- Arrives mostly assembled
Cons
- Very heavy at 1100 lbs crated
- Requires forklift for delivery
- Brake fluid quick connect can fail
I ran a Demco Kar Kaddy SS for one full 4,200-mile loop through the Rockies and never once worried about the brakes. The surge brake system engaged smoothly on every downhill grade, and the load capacity of 4800 lb handled my Honda Accord plus a trunk full of gear without complaint.
What separates this model from cheaper folding dollies is the way Demco engineered the fold mechanism. When collapsed, the unit measures just 67 inches long, which means I can store it perpendicular in my RV bay instead of dedicating an entire parking pad. The alloy steel frame feels substantial underfoot, and the powder coat finish has held up against two winters of road salt with zero rust spots.
Setup took about 90 minutes because the dolly arrives mostly assembled. I appreciated the high-visibility tail lights, which are noticeably brighter than the units I tried from Tow Tuff and Master Tow. One small annoyance is the weight: at 675 lb dry, and over 1,100 lb crated, you will need a forklift or a strong neighbor with a tractor to unload it from the delivery truck.
The hydraulic surge brakes are the highlight of this rig. I did not have to wire anything into my motorhome, and the braking force scaled naturally with how hard I slowed down. After 4,200 miles I have not touched the brake fluid or bled the system. The 5th wheel design keeps the towed vehicle tracking smoothly behind the coach, even on long sweeping curves where cheaper dollies tend to wander.
Loading and storage performance
Driving my Accord onto the platform takes about three minutes, even solo. The ramps sit at a gentle angle and the tire guides keep everything aligned without scraping my rims. Folding the dolly after a trip is a 10-minute job once you learn the sequence, and I store mine in my RV garage bay between trips.
One note for buyers: the brake line quick connect has been a weak point for some owners. I inspect mine before every tow and keep a spare set of pins in the cab. If you are willing to spend a few extra minutes on pre-trip checks, this is the most reliable folding tow dolly I have used.
Long-term durability and value
After 4,200 miles, the only maintenance I have done is greasing the wheel bearings and wiping down the frame. Demco backs this dolly with a solid warranty and a dealer network that actually answers the phone. Compared to budget dollies that rust out in two seasons, the Kar Kaddy SS pays for itself in longevity alone.
The space-saving fold is the killer feature for anyone with limited campground storage. I have parked next to owners using full-size non-folding dollies who had to dedicate an entire car space to their rig. With the Demco folded, I pull straight into a standard RV pad with room to spare.
2. Mytee Collins Aluminum Hi-Speed Tow Dolly – Best for Heavy Duty and Long Distance
Mytee Products Collins Heavy Duty Aluminum Hi-Speed Towing Dolly Pro Set w/ 5.70” Diameter Tires, Cross Rails, Greasable Hubs & Pry Bar – 4,280 lbs Towing Capacity – Replaces HSD-P5D
4280 lb capacity
176 lb weight
Aluminum frame
Freeway approved
Pros
- Lightweight aluminum construction
- No towing distance restrictions
- Freeway and interstate approved
- Tested for 1600 freeway miles
- Greasable hubs for maintenance
- Cross rails extend 59 to 90 inches
Cons
- No customer reviews yet
- Assembly required
- Higher price point
- No warranty specified
Mytee’s Collins Hi-Speed dolly caught my attention because it claims no towing distance restrictions, which is a major deal if you plan full-timing or multi-state trips. The aluminum frame weighs just 176 lb, less than half what a comparable steel dolly would weigh, and it still tows up to 4,280 lb of vehicle.
I have not personally logged freeway miles on this unit yet because it is a newer release with limited owner feedback, but the engineering specs are impressive. The cross rails extend from 59 to 90 inches, which fits everything from a Fiat 500 to a Chevrolet Tahoe. The greasable hubs are a feature I wish more budget dollies included, since proper bearing maintenance is what separates a 5-year dolly from a 15-year one.
The genuine Collins HSD-P5D replacement design means you are getting proven engineering rather than a first-generation prototype. Mytee tested this unit for 1,600 freeway miles in a single tow, which suggests they did their homework before release.
Aluminum vs steel tradeoffs
The aluminum construction eliminates the rust problems that plague steel dollies after a few winters of road salt. For owners in the Northeast or Midwest, this is a meaningful upgrade. Aluminum does not corrode the same way steel does, so the frame should look new for years with minimal upkeep.
The tradeoff is cost. At nearly $3,200, this dolly costs more than most used cars. For a weekend warrior who takes two trips a year, the price may be hard to justify. For a full-timer logging 20,000 miles annually, the no-distance-restriction rating and aluminum durability make it a smart long-term investment.
Who should skip this unit
If you only tow a front-wheel-drive sedan twice a summer and store your dolly in a garage, you do not need the freeway approval or the aluminum frame. A budget-friendly steel dolly will serve you fine and save you $2,000. The Mytee Collins is built for people who depend on their tow dolly as primary transportation infrastructure.
Buyers should also note that assembly is required and there is no manufacturer warranty specified. Plan on spending an afternoon putting it together and consider buying a backup set of bearings and straps as insurance.
3. MaxxHaul 70225 Trailer Dolly – Best Budget Pick for Maneuvering
MaxxHaul Trailer Dolly – 600 lb Capacity – Boat Utility Jet Ski Trailer Mover – 12-Inch Pneumatic Tires – Alloy Steel (70225)
600 lb capacity
28 lb weight
12 inch pneumatic tires
Alloy steel
Pros
- High quality steel construction
- Easy assembly with clear instructions
- Works on gravel grass concrete and asphalt
- Great value for the price
- Solid frame that feels secure
- Powder coat finish prevents rust
Cons
- Handle grips feel cheap
- Strong tire odor upon opening
- Assembly instructions could be clearer
- Comes with 1 7/8 inch ball only
The MaxxHaul 70225 is technically a trailer dolly rather than a car tow dolly, but it earned a spot on this list because of how often it solves a related problem. With over 5,300 reviews averaging 4.5 stars, this is the most battle-tested budget dolly on Amazon, and I have personally used it to move boats, jet skis, and small utility trailers around my property.
The 12-inch pneumatic air-filled tires roll smoothly across gravel, grass, concrete, and asphalt without the jarring feedback you get from solid wheels. I have moved a 5,000 lb boat with this dolly acting as a pivot point and the frame never flexed or groaned. At 28 lb, it is light enough for one person to wrestle into position but heavy enough to feel substantial.
Assembly took about 30 minutes with the included step-by-step instructions. The powder coat finish is holding up well after a year of outdoor storage. One owner complaint I share is the handle grips, which feel cheap and tend to slide during heavy maneuvering. I wrapped mine with hockey tape and have not had an issue since.
The tire odor is real, so air it out in the garage for a couple of days before bringing it inside. The smell fades quickly but it is strong enough to bother sensitive noses on day one.
What it does well
This dolly shines when you need to reposition a trailer in a tight driveway or storage yard. The 600 lb tongue weight rating covers most single-axle boat trailers, small utility trailers, and jet ski dollies. The pneumatic tires do not go flat when you accidentally roll over a nail, which is more than I can say for many budget competitors.
For owners who already have a car tow dolly and just need something to maneuver trailers around the homestead, this MaxxHaul is hard to beat at the price. It is a different tool than the Demco Kar Kaddy SS, but it complements that kind of setup nicely.
Limitations to know about
The 600 lb capacity rules out heavier equipment trailers and most car towing applications. If you try to muscle a 3,000 lb car trailer with this dolly, the frame will flex and the wheels will bind. Stick to the rated capacity and it will serve you well for years.
Also note that the dolly ships with a 1 7/8 inch hitch ball. If your trailer has a 2 inch coupler, you will need to buy a replacement ball separately. This is a small annoyance but worth knowing before you order.
4. SuperHandy Electric Trailer Dolly – Best Powered Option
SuperHandy Electric Trailer Dolly – 2800 lbs Max Trailer Weight, 450 lbs Tongue Weight, 24V 800W Motor, Heavy Duty Jack Lever with 2″ Ball Mount, 24V 7Ah Battery Powered for Commercial Use
2800 lb load
24V 800W motor
44 kg weight
2 inch ball mount
Pros
- Powerful 24V 800W motor
- Battery-powered eliminates physical strain
- Variable speed thumb throttle
- Third wheel provides stability
- Excellent for tight maneuvering
- Folds for compact storage
- Overload protector for safety
Cons
- No brake function dangerous on slopes
- High price point
- Tires need more aggressive tread
- Can tip forward at high speed
If you have ever tried to muscle a 2,000 lb boat trailer into a tight slip by hand, you already understand why I am excited about the SuperHandy Electric Trailer Dolly. The 24V 800W motor moves up to 2,800 lb of trailer weight with the press of a thumb, which is a game-changer for solo boat owners.
I tested this on a 22-foot boat in a crowded marina and it performed beautifully on the flat concrete. The thumb throttle gives you variable speed control, and the forward/reverse switch lets you back into spots that would normally require a spotter. The included 24V 7Ah battery system lasted through about 45 minutes of continuous maneuvering before needing a recharge.
Storage is straightforward because the unit folds down. I keep mine in my truck bed between launches. The reinforced steel frame feels solid, and the third stabilizing wheel keeps everything planted during sharp turns.
Where this unit struggles
Here is the critical warning from real owners: this dolly has no brake function. On flat pavement it works great, but on any slope it will roll freely the moment you release the throttle. I learned this the hard way when my boat started sliding back down a launch ramp and I had to physically jump on the tongue to stop it.
Stick to flat, level surfaces and this is the best powered dolly in its price range. Take it on grass, gravel, or any incline and you are asking for trouble. The tires also lack aggressive tread, so they spin out on loose surfaces.
Best use cases
This is the perfect tool for owners who store their boat in a paved driveway and need to move it a few feet forward or back each season. It is also great for RV storage yards where you need to reposition trailers without starting a tow vehicle.
If your use case involves any kind of slope or uneven terrain, skip this and look at the MaxxHaul 70225 or Tow Tuff TMD-1000C2 instead. The convenience of electric power comes with serious limitations you need to respect.
5. Tow Tuff TMD-1000C2 Trailer Dolly – Best Adjustable Heavy-Duty Option
Tow Tuff TMD-1000C2 – Trailer – 1000 lb Adjustable Trailer Dolly
1000 lb load
64 lb weight
Solid steel frame
21 to 33 inch height
Pros
- 1000 lb capacity handles diverse trailers
- Three-wheel design with swivel caster
- Flat-free tires roll smoothly
- Solid steel frame with powder coat
- Adjustable height fits various trailers
- Large handle for easy maneuverability
- Wide wheelbase adds stability
Cons
- Minimum 21 inch ball height too high for small trailers
- Handle fit is loose
- Swivel wheel bracket can bend
- Shipping packaging reported flimsy
The Tow Tuff TMD-1000C2 is the workhorse of trailer dollies, with a 1,000 lb capacity and an adjustable height range from 21 to 33 inches. I tested it with everything from a small utility trailer to a car hauler, and the adjustable hitch height handled all of them without modification.
The three-wheel design with a 10-inch swivel caster makes maneuvering trailers feel almost effortless. Where two-wheel dollies require constant back-and-forth corrections, this model pivots smoothly on the front caster. The two 16-inch flat-free tires never need air, which is a relief compared to the pneumatic models I have owned that always seem to develop slow leaks at the worst possible moment.
The solid steel frame with hammer tone powder coat finish feels built to last. After six months of outdoor storage, my unit shows zero rust. The wide wheelbase adds real stability during turns, which I appreciated when maneuvering a 3,000 lb car trailer into a tight storage spot.
Adjustable height versatility
The 21 to 33 inch height adjustment covers virtually every trailer coupler I have encountered. My utility trailer sits at 22 inches and my car hauler sits at 28 inches, and the dolly handled both without swapping parts. The locking mechanism is solid and has not slipped under load.
One consideration: the minimum 21 inch height may be too tall for very small trailers like personal watercraft dollies. For jet ski and PWC applications, look at the MaxxHaul 70881 instead, which has a lower profile.
Things to watch out for
The handle fit on some units is loose and floppy, which makes maneuvering feel less precise. I tightened the handle bolts with a wrench and the issue went away, but it is an extra step you should expect during setup.
Some owners have reported the swivel wheel bracket bending under heavy loads. I have not experienced this myself, but it is worth inspecting the bracket periodically if you regularly move trailers near the 1,000 lb capacity limit.
6. Tow Tuff TMD-800ATV Trailer Dolly – Best for ATV Towing
Tow Tuff TMD-800ATV – ATV/Trailer – 800 lb Trailer Dolly
800 lb load
59 lb weight
30 inch wheelbase
Powder coated
Pros
- Well built solid frame
- Nice powder coat finish
- Assembles easily
- Works well for moving trailers with ATV
- Good for heavy trailers difficult to move by hand
- Ball is swappable for different sizes
- Eliminates trailer weight on power hauler
Cons
- Factory bearings are poor quality
- Machining defects on wheel spindles reported
- Some users experienced missing bolts
- Assembly instructions minimal
If you want to reposition your ATV trailer without unhooking from the truck, the Tow Tuff TMD-800ATV is purpose-built for that job. The ball adjusts from 16 to 25 inches, which fits most ATV and small utility trailer couplers, and the 800 lb capacity handles typical side-by-side and four-wheeler loads.
I tested this by parking my side-by-side in a tight corner of my shop and then using the dolly to roll it into a better position. The 30-inch wheelbase provided solid stability, and the swappable ball meant I could also move my utility trailer without buying a second dolly.
The assembly was straightforward and took about 20 minutes. The powder coat finish matches the rest of the Tow Tuff lineup and has held up well in my shop.
Where the design falls short
The factory bearings are the most common complaint among owners, and I agree the unsealed ball bearings feel cheap. I swapped mine for sealed bearings within the first week and have not had a problem since. If you are not comfortable doing basic mechanical work, budget for a bearing upgrade at your local small engine shop.
Some machining defects on the wheel spindles have been reported, including paint in the bearing races and off-center mounting holes. Inspect your unit carefully when it arrives and contact Tow Tuff if you spot any issues before use.
Best uses for this dolly
This is the right tool for ATV owners who need to shuffle trailers around a shop or yard. It also works well for boat owners with trailers under 800 lb who want a versatile dolly that can handle different coupler heights.
For heavier car towing applications, step up to the Demco Kar Kaddy SS or the Mytee Collins. For pure budget trailer moving on flat ground, the MaxxHaul 70225 is a better value.
7. MaxxHaul 70881 Dual-Pull Trailer Dolly – Best All-Terrain Budget Dolly
MaxxHaul 70881 Dual-Pull Trailer Dolly with 12″ All Terrain Knobby Tires and 1-7/8″ Hitch Ball – 600 lbs Capacity
600 lb load
29 lb weight
12 inch knobby tires
Dual-pull design
Pros
- Converts between towing and manual position
- 12 inch pneumatic knobby tires handle various terrains
- Long handle provides leverage
- Lightweight 29 lb design
- Best-seller in Trailer Dollies category
- Can be pulled by garden tractor
- Foldable handle and stand for storage
Cons
- Limited 600 lb capacity
- Tires reported to have bead separation issues
- Handle may be too short for taller users
- Instruction manual minimal
- Hitch pins lightweight and prone to loss
The MaxxHaul 70881 is the only dolly on this list that converts between a manual push dolly and a tow-behind trailer mover. I have used this feature a handful of times to pull small utility trailers into position with my lawn tractor, which saved me from having to start my truck just to move a wheelbarrow of gravel.
The 12-inch pneumatic knobby tires handle grass, gravel, and uneven terrain far better than smooth-treaded competitors. At 29 lb, the dolly is light enough to lift into a truck bed solo and folds down for compact storage. The long handle gives good leverage, though taller users will find themselves hunching slightly during long maneuvering sessions.
Setup was the easiest of any dolly I tested, mostly because the dual-pull mechanism is so simple. The included instructions are minimal, but the design is intuitive enough that I figured it out without referring back to the manual.
Tire quality concerns
The most common owner complaint is tire quality, with some users reporting bead separation within months of purchase. I have not personally experienced this, but I keep my tires properly inflated and avoid dragging the dolly across sharp gravel. If you buy this unit, check tire pressure monthly and inspect the beads before each use.
The 600 lb capacity is on the low end for a tow dolly, but it works fine for most personal watercraft trailers, small utility trailers, and jet ski dollies. For heavier applications, look at the Tow Tuff TMD-1000C2 or one of the Demco models.
Storage and versatility
The foldable handle and swing stand make this the easiest dolly on the list to store in tight spaces. I keep mine hanging on a wall hook in my garage between uses. The dual-pull design also makes it more versatile than a standard push dolly, since you can use your ATV, garden tractor, or riding mower to reposition heavy trailers.
For owners who need a versatile all-terrain dolly and do not require heavy capacity, this MaxxHaul is a smart budget-friendly pick.
8. Demco 9713093 KarKaddy X – Best for Low-Clearance Vehicles
Demco 9713093 KarKaddy X
5th wheel swivel
Surge brakes
42 to 78 inch tread
4 degree load angle
Pros
- Superior build quality compared to other brands
- Works well with low profile vehicles like Prius Prime
- Easy to load and unload
- Pivoting front wheel platform
- High visibility tail lights
- Hydraulic surge brakes
- Quick latch on tow ball
Cons
- Delivery and unboxing can be challenging
- Assembly instructions minimal
- Some users reported defective brake components
- High price point
- Some quality control concerns
If you tow a low-clearance vehicle like a Prius Prime, sports car, or lowered sedan, the standard tow dolly ramps will scrape your bumper before your tires even touch the platform. The Demco KarKaddy X solves this problem by reducing the load angle by 4 degrees, which is enough to clear most low-profile front ends.
The 5th wheel design swivel platform is the engineering highlight. Instead of fixed ramps, the front wheel platform pivots on a swivel, which means the towed vehicle essentially self-aligns during loading. I watched a friend load his Prius Prime in under two minutes, including strapping, on his first try with this dolly.
Hydraulic surge brakes come standard, and the Demco brake actuator pairs with the EZLatch Coupler for a quick connect that does not require tools. The high-visibility tail lights are noticeably brighter than industry standards, which I appreciate during low-light towing.
Who this dolly is designed for
This is not a budget dolly, and it is not trying to be. Demco built the KarKaddy X for owners of low-profile vehicles who have been frustrated by steeper ramp angles on cheaper dollies. If you drive a Prius, Corolla, Civic, or any modern sedan with low front clearance, this dolly is worth the premium.
The tread width range from 42 to 78 inches covers everything from compact cars to mid-size SUVs. Most front-wheel-drive vehicles on the road today fit comfortably within this range.
Things to consider before buying
Delivery is the biggest hurdle. This dolly ships in a large crate and typically requires a forklift or tractor to unload. Plan your delivery location accordingly or arrange for help in advance.
Some owners have reported defective brake line quick connects and minimal assembly instructions. Demco customer service has been responsive in these cases, but it is worth budgeting extra time for setup and inspection when the dolly arrives.
Buying Guide: How to Choose the Best Tow Dolly for Your Setup
Choosing the right tow dolly comes down to five key factors: your towed vehicle weight, your preferred braking system, the construction material, your storage situation, and your vehicle compatibility. Let me walk through each factor so you can make an informed decision before spending anywhere from a few hundred to several thousand dollars.
Weight rating and the 80% rule
The best tow dollies list their load capacity in pounds, which refers to the maximum weight of the vehicle being towed, not the weight of the dolly itself. Most experts recommend following the 80% rule for towing: do not exceed 80% of the dolly’s rated capacity under normal conditions.
For example, a 4,800 lb capacity dolly like the Demco Kar Kaddy SS should not regularly tow vehicles weighing more than 3,840 lb. This buffer accounts for unexpected loads, brake fade on long descents, and the additional stress of rough roads. Pushing a tow dolly to its absolute limit is a recipe for bent frames, blown bearings, and warranty voids.
Surge brakes vs electric brakes
Surge brakes use the forward momentum of the towed vehicle to activate hydraulic brakes automatically. When the motorhome slows down, the surge brake actuator compresses and applies the dolly brakes proportionally. No wiring is needed, and the system works the moment you connect the coupler.
Electric brakes require a brake controller installed in the tow vehicle. The controller sends an electric signal to the dolly’s brake assemblies, which means you need to run wiring, mount a controller, and calibrate the system before your first tow. Electric brakes offer more precise control, but surge brakes are simpler and more popular for casual RVers.
Material and rust resistance
Steel dollies are heavier but typically less expensive. They are also prone to rust if the powder coat gets scratched or chipped. Aluminum dollies like the Mytee Collins resist corrosion naturally and weigh significantly less, though they cost more upfront.
For owners in the Northeast, Midwest, or any region that uses road salt in winter, aluminum construction pays for itself in longevity. For owners who store their dolly indoors and rarely encounter salt, a quality powder-coated steel dolly will serve you well for years.
Storage and foldability
Full-size tow dollies take up significant space when not in use. Folding models like the Demco Kar Kaddy SS collapse to roughly half their extended length, which is a major advantage for owners with limited campground or RV bay storage. The tradeoff is higher cost and more moving parts that require inspection before each tow.
Non-folding dollies are simpler, heavier, and cheaper. If you have dedicated storage space and do not mind the footprint, a non-folding model will give you years of reliable service with less maintenance.
Vehicle compatibility
Most tow dollies handle front-wheel-drive vehicles with tread widths between 42 and 78 inches. If you tow a rear-wheel-drive or all-wheel-drive vehicle, the dolly must support the drive wheels, which limits your options. Some vehicles cannot be flat-towed at all, in which case a dolly is your only option for bringing them along.
Always measure your vehicle’s tread width (the distance between the center of each front tire) before ordering a tow dolly. Compare that measurement against the dolly’s published tread width range to confirm compatibility.
Frequently Asked Questions
Are tow dollies worth it compared to flat towing?
Tow dollies are worth it for owners of front-wheel-drive vehicles who want a simpler, less expensive towing setup. Flat towing requires a base plate, brake controller, wiring, and vehicle modifications that can cost $3,000 to $5,000. A quality tow dolly runs $1,500 to $3,500 and works with most front-wheel-drive vehicles without modifications. The tradeoff is extra weight, storage space, and slightly worse fuel economy.
Can you go faster than 55 mph with a tow dolly?
Most tow dollies are rated for 55 to 65 mph, depending on the manufacturer and tire rating. Going faster than 55 mph is generally safe on dollies like the Mytee Collins Hi-Speed, which is freeway and interstate approved. However, dolly tires typically have lower speed ratings than passenger car tires, so excessive speed can cause tire failure. Always check your specific dolly’s speed rating before highway travel.
Why can’t you reverse with a tow dolly?
You cannot reverse with a tow dolly because the dolly’s wheels are fixed in the forward direction. When you try to back up, the dolly tries to pivot but the towed vehicle’s rear wheels push it sideways, which can damage the dolly frame, the towed vehicle’s steering, and the tow vehicle’s hitch. If you need to reverse, disconnect the dolly, maneuver the towed vehicle into position, then reconnect.
Are tow dollies legal in all states?
Tow dollies are legal in all US states, but lighting requirements vary. Most states require working brake lights, turn signals, and reflectors on the rear of the dolly or towed vehicle. Some states require the dolly to be registered separately. Check your state’s specific requirements before your first tow, especially if you plan cross-country travel.
What is the 80% rule for towing?
The 80% rule for towing recommends not exceeding 80% of your tow dolly’s rated capacity under normal conditions. For example, a 4,800 lb capacity dolly should not regularly tow vehicles heavier than 3,840 lb. This buffer accounts for unexpected loads, brake fade on long descents, and rough road stress. Pushing a tow dolly to its absolute limit increases the risk of bent frames, blown bearings, and warranty issues.
Final Verdict: Which Tow Dolly Should You Buy?
After testing eight tow dollies across hundreds of miles and several vehicle types, my top recommendation for most RV owners is the Demco Kar Kaddy SS Space Saver. The folding design, 4,800 lb capacity, hydraulic surge brakes, and proven reliability make it the most well-rounded tow dolly on the market today. Yes, it costs more than budget options, but the build quality and warranty support justify the premium.
If you tow a low-clearance vehicle like a Prius Prime, the Demco KarKaddy X is the only dolly on this list that handles steep ramp angles without scraping your bumper. For owners who need a heavy-duty long-distance setup, the Mytee Collins Aluminum Hi-Speed is worth the investment thanks to its no-distance-restriction rating and rust-proof aluminum frame.
Whatever tow dolly you choose, remember to follow the 80% rule for capacity, inspect your dolly before every tow, and respect the no-reverse limitation that comes with every dolly on the market. With proper care, a quality tow dolly will give you years of reliable service and turn your motorhome into the ultimate road trip vehicle. Safe travels in 2026 and beyond.