Flat towing a car behind an RV means trusting four straps and a set of wheels to keep 3,000-plus pounds tracking straight at highway speed, and the car pulling dolly you choose only performs as well as the tie-down system bolted to it. Get the strap rating or hookup style wrong and you're not looking at a inconvenience — you're looking at a car that fishtails off the dolly on I-80.
- A car pulling dolly only holds securely when axle straps rated 3,300 lbs match the vehicle — PROSeries is the safe buy for 2026.
- Front-wheel-drive cars need wheel-lift or lasso-style straps at the drive axle, not just rear tie-downs.
- VULCAN's Complete Axle Strap Tie-Down Kit in PROSeries covers front and rear anchor points for full-dolly setups.
- Skip bargain webbing under 3,300 lb safe working load — undersized straps are the most common cause of dolly slip-outs.
Why this matters
A tow dolly lifts the drive wheels off the pavement and lets the rest of the car roll free behind the RV, but the dolly frame itself does nothing to stop the car from shifting side to side over 500 highway miles. That job belongs entirely to the tie-down straps, and in 2026 the safe working load standard for that job is 3,300 pounds per strap set — anything under that spec is a liability on grades and in crosswinds. TruckNTow has outfitted trucking and towing professionals with car tie-down equipment since 1959, and the same lasso-style car tie-down straps that flatbed haulers run daily are what keep a dolly-mounted car from becoming a highway hazard.
Who this is for
This guide is for RV owners flat towing a daily driver, SUV, or compact car behind a motorhome, and it's specifically built around front-wheel-drive setups where the dolly lifts the drive axle. If you're a full-time RVer running the same tow vehicle every week, the strap and hardware choice matters more than the dolly brand — straps wear out from UV exposure and repeated ratcheting long before the dolly frame does. Weekend towers who hook up a few times a season can run lighter-duty gear, but the safe working load minimum doesn't change either way.
What to look for in a car pulling dolly setup
Safe working load matched to curb weight
Every strap set carries a safe working load (SWL) rating, and 3,300 pounds is the standard for compact and midsize cars in 2026. If your tow vehicle's curb weight pushes past 3,500 pounds — a loaded crossover or a small pickup — you need straps rated to match, not straps that happen to fit the anchor points. Undersized SWL is the single most common reason a car walks off a dolly on a grade.
Wheel-lift geometry for your drivetrain
A car pulling dolly lifts whichever axle sits on the ramp, and front-wheel-drive cars need the tie-down anchored at that lifted axle with straps designed for the geometry — not straps borrowed from a flatbed rig. Rear-wheel-drive and all-wheel-drive vehicles change the anchor point entirely, which is why strap kits are sold by drivetrain type rather than one-size-fits-all.
Strap and ratchet build quality
Webbing width and hook style decide how fast you can hook up at a rest stop and how well the strap resists abrasion against the dolly frame. Two-inch webbing with a snap hook or flat hook end handles daily hookups better than narrower straps, and a folding-handle ratchet cuts hookup time versus a standard lever.
Corrosion and UV resistance
A strap that lives outside for a full towing season takes sun, road salt, and grease. High-viz and PROSeries webbing coatings resist UV breakdown longer than basic yellow polyester, which matters if you're towing more than a handful of trips a year.
Compatibility with hitch class and dolly capacity
The strap kit has to match not just the car but the dolly's own rated capacity — most consumer car pulling dollies top out between 3,500 and 5,000 pounds gross, so pairing a 3,300 lb strap set with a dolly rated well above that leaves the strap as the weak link in the chain, not the dolly.
Top picks for securing a car on a tow dolly
VULCAN PROSeries Lasso-Style Car Tie-Down — the safe pick. Rated to a 3,300-pound safe working load and built with chain anchors that grip the tire rather than the rim, this is the strap system flatbed operators reach for when the load can't shift. Buy if you're towing a sedan or compact SUV weekly and want a strap that outlasts a season of sun exposure. PROSeries lasso tie-down straps run the same anchor geometry used across TruckNTow's car hauler line.
VULCAN Complete Axle Strap Tie-Down Kit, PROSeries — the axle specialist. This kit bundles 22-inch and 36-inch axle straps with 8-inch snap hook ratchets, covering the front and rear anchor points a dolly setup actually needs instead of forcing one strap length to do both jobs. Buy if you're running a front-wheel-drive daily driver on the dolly and want dedicated axle-length coverage rather than a universal strap. The complete axle strap tie-down kit is built around 3,300-pound safe working load hardware throughout.
VULCAN Car Tie-Down, Classic Yellow — the budget pick. Same 3,300-pound SWL rating as the PROSeries line, minus the high-viz coating and premium webhead finish. Consider it for occasional weekend towing where the strap sees a handful of hookups a year rather than daily highway miles.
VULCAN Wheel Tie-Down Kit, PROSeries — the wheel-lift specialist. Snap-hook ratchets paired with wheel straps designed to cradle the tire against a dolly ramp rather than a flatbed deck. Consider it as a second strap set if your dolly setup needs both an axle strap and a wheel strap for full coverage on a heavier tow vehicle.
What to avoid
- Straps under 3,300 lb SWL sold as "universal." A strap that fits every anchor point but carries no clear SWL rating is a strap with an unknown breaking point — don't guess with a car rolling behind an RV at 60 mph.
- Mismatched drivetrain straps. A rear-wheel-drive tie-down kit forced onto a front-wheel-drive dolly setup leaves the drive axle under-anchored, which is exactly the axle taking the most stress on a dolly.
- Reused straps past their service life. Webbing that's cracked, frayed, or sun-bleached has already lost SWL capacity even if it looks intact — read more in how to strap a car to a tow dolly safely before your next trip.
Verdict comparison
| Pick | SWL rating | Best for | Verdict |
|---|---|---|---|
| PROSeries Lasso-Style Tie-Down | 3,300 lbs | Weekly flat towing, FWD/RWD | Buy |
| Complete Axle Strap Kit, PROSeries | 3,300 lbs | Dedicated front/rear axle coverage | Buy |
| Classic Yellow Tie-Down | 3,300 lbs | Occasional weekend towing | Consider |
| Wheel Tie-Down Kit, PROSeries | 3,300 lbs | Secondary wheel-strap coverage | Consider |
FAQ
What's the best car pulling dolly setup for flat towing in 2026?
The best setup pairs a dolly rated above your tow vehicle's curb weight with a 3,300-pound SWL strap kit matched to the drivetrain. A PROSeries axle strap tie-down kit is the safest choice for weekly RV towing in 2026.
How much weight can a tow dolly axle strap hold?
A standard VULCAN axle strap holds a 3,300-pound safe working load per strap. That rating covers most compact and midsize sedans, but heavier crossovers need strap sets confirmed against the vehicle's actual curb weight.
Is flat towing better than a tow dolly?
Flat towing all four wheels down works only for vehicles the manufacturer approves for it, while a tow dolly lets nearly any front-wheel-drive car ride behind an RV. The dolly route needs the correct strap system to be just as safe.
How much does a tow dolly strap kit cost in 2026?
A four-pack of VULCAN axle straps runs $24.99 to $29.99 depending on series in 2026, while a complete lasso-style tie-down kit runs $73.99 to $135.99 depending on configuration.
Do I need to strap down the wheels on a tow dolly?
Yes — the dolly frame doesn't restrain lateral movement on its own. Wheel straps or axle straps rated to at least 3,300 pounds SWL are what keep the car centered on the dolly deck.
Can I flat tow a front-wheel-drive car on a dolly?
Front-wheel-drive cars are the most common vehicles towed on a dolly because the dolly lifts the drive axle and lets the rear wheels roll free. Anchor straps still need to match that front-axle geometry specifically.
How often should I replace tow dolly straps?
Replace straps once webbing shows cracking, fraying, or UV bleaching, typically within 2 to 3 towing seasons of regular use. A strap that's lost its stiffness has already lost SWL capacity even without visible damage.
One last thing
Most RVers focus entirely on the dolly's weight rating and skip the strap spec altogether, but the strap set is replaced far more often than the dolly itself — plan on budgeting for fresh webbing every couple of seasons, not just when a strap visibly frays. TruckNTow ships every strap kit with free ground shipping, so replacing a worn set before a long trip costs a phone call, not a special trip to a shop.
Shop the full car tie-down line here and check tow dolly straps for front-wheel-drive cars before your next hookup. Run the right strap and the dolly does exactly what it's built for — nothing more, nothing less.