An electric winch on a car trailer does a different job from a vehicle-mounted winch: the car ROLLS up a deck or ramps, so sizing follows rolling-load maths (a fraction of the car’s weight, set by ramp angle) — not the stuck-vehicle GVW × 1.5 rule — and the safety-critical spec is the BRAKE, because the load hangs on the line at the top of the deck while you reach for the straps. This guide is the electric, car-hauler-specific ranking. The general electric trailer ranking is our electric trailer guide (same sizing doctrine, wider loads); vehicle-mounted picks for trailers you tow WITH a truck are our car trailer winch guide; hand winches for car trailers are the hand winch guide. Every pick here is carried over from this site’s verified trailer research — the discipline below is what the rebuild adds.
How we researched: Dutton-Lainson, Champion and Superwinch data matched to exact model numbers across this site’s trailer research files. We do not test winches.
Short answer: the StrongArm SA9000DC is the car-hauler default — the only true automatic brake in this class. The Champion kit is the wireless convenience pick; light cars honestly size down to the LT3000.
Size by the deck, not the stuck-vehicle rule
| Load case | Rolling-load guide | Class that covers it |
|---|---|---|
| Light car (to ~2,800 lb) on a tilt deck / shallow ramps | Roughly 1/4–1/3 of car weight at the line | 3,000 lb class (LT3000, and the StrongArm with margin) |
| Mid car / SUV (3,000–4,500 lb) on ramps | Ramp angle steepens the fraction — size up a class | StrongArm SA9000DC (3,000 lb DEAD weight — a harder currency) / Champion 4500 |
| Dead car (flat tyre, seized, no roll) | Rolling maths no longer applies — it is a drag | Step up: the vehicle-class picks in our car trailer winch guide, or double-line the StrongArm per its manual |
Deck safety: at the top of the ramps the car hangs on the winch line. Only the StrongArm here holds that load with a true automatic brake; on dynamic-brake winches, chock the wheels the moment the car crests, keep tension until the straps are on, and never stand downhill of a loaded car on a line. Flat tyres and seized wheels turn a rolling pull into a drag — re-read the sizing table’s last row before forcing it.
Our top electric winches for car trailers
Best Overall for Car Haulers
Dutton-Lainson StrongArm SA9000DC
3,000 lb dead weight · Brake: Automatic friction + dynamic
Best Wireless Kit
Champion 4500 Wireless Kit (14560)
4,500 lb · Brake: Dynamic (see guide doctrine)
Electric car trailer winches compared
| Winch | Rating (as published) | Brake | Control | Warranty | Our Score | Price |
|---|---|---|---|---|---|---|
| Dutton-Lainson StrongArm SA9000DC | 3,000 lb dead weight | Automatic friction + dynamic | Power in/out, clutch slip, crank backup | See maker | 9.2 | |
| Champion 4500 Wireless Kit (14560) | 4,500 lb | Dynamic (see guide doctrine) | Wireless remote kit | 2-year limited | 8.5 | |
| Superwinch LT3000ATV | 3,000 lb | Dynamic | Power in/out | See maker | 8.2 | |
| Superwinch Terra 35 (Steel) | 3,500 lb | Dynamic | Power in/out | Not published | 8.0 |
How our score works: car-hauler fit (rolling-load class + deck manners) 30% · braking and load control 30% · kit completeness 15% · published-spec honesty 10% · owner feedback 15%. Our Score is editorial judgement based on published specs and owner reports, not test results.
1. Dutton-Lainson StrongArm SA9000DC — Best Overall for Car Haulers
The StrongArm leads here for the same reason it leads our general electric trailer guide: it is the only pick with a true automatic brake (mechanical friction + dynamic), a 3,000 lb DEAD-WEIGHT rating (the hardest currency on this page), a clutch you can slip for controlled payout down the deck, an emergency crank, and the 25 ft tow-vehicle harness in the box. On a car hauler every one of those is a loading-day feature, not a spec-sheet ornament.
| Rated capacity | 3,000 lb dead weight (single line) |
| Gear ratio | 570:1 |
| Braking | Automatic mechanical friction brake + dynamic brake |
| Clutch | Controlled freewheeling (can be slipped) |
| Backup | Emergency hand crank |
| Power | 12V DC via 25 ft vehicle harness (included) |
Pros
- True automatic brake
- Controlled payout for unloading
- Crank backup
Watch-outs
- Intermittent duty (~4 min continuous, maker manual)
- Dead-weight currency confuses cross-shoppers (see table)
What owners say: StrongArm record carried across our trailer guides, incl. Hull Truth dealer corroboration of the rating.
2. Champion 4500 Wireless Kit (14560) — Best Wireless Kit
The Champion 14560 kit is the convenience pick: a complete 4,500 lb wireless kit that bolts onto a trailer tongue and loads a car from the remote in your hand — with the brake doctrine printed plainly: its holding is dynamic-brake class, so the safety box’s chock-and-strap discipline is the operating procedure, not a suggestion. Published 2-year warranty; full record in our electric trailer guide.
| Rated pull | 4,500 lb |
| Gear ratio | 180:1 |
| Rope | Steel, 38 ft x 15/64 in |
| Format | Wireless kit |
| Warranty | 2-year limited |
Pros
- Wireless loading
- Complete kit
- Published warranty
Watch-outs
- Dynamic-brake holding only
- Steel line
What owners say: Kit record from our trailer and ATV research.
3. Superwinch LT3000ATV — Best for Light Cars
The LT3000 is the honest light-car pick — a 3,000 lb ATV-class winch reclassed to the duty it actually fits, as in our electric trailer guide: light cars on tilt decks and shallow ramps, where its rolling-load maths works and its price makes sense. It is not a dead-car drag winch; the sizing table’s last row is its boundary.
| Rated pull | 3,000 lb |
| Role | Light cars on tilt decks / shallow ramps |
| Braking | Dynamic |
Pros
- Honest light-duty sizing
- Simple and proven
Watch-outs
- Not for dead cars or steep ramp angles
- Dynamic brake only
What owners say: Reclassed with its record stated in our electric trailer guide.
4. Superwinch Terra 35 (Steel) — Best Steel-Line Hauler
The Terra 35 steel is the steel-line hauler: 3,500 lb at 140:1 (the corrected figure from our plowing research — a retailer’s 198:1 is an error) for owners whose decks are abrasive and whose loads are mid-weight. Its warranty prints Not published: sources conflict, as documented in our trailer research.
| Rated pull | 3,500 lb |
| Gear ratio | 140:1 (a retailer’s 198:1 is an error) |
| Rope | Steel cable |
| Warranty | Not published (sources conflict) |
Pros
- Steel-line durability
- Mid-weight class
Watch-outs
- Warranty data conflicts
- Dynamic brake class
What owners say: Terra record across our plowing and trailer research.
Also documented: Powerwinch 912 (no buy button)
The Powerwinch 912 remains the established dealer-channel electric for trailer duty — covered here, as in our other trailer guides, without a button because our research has never verified an Amazon listing for it to this site’s standard. Brake-first buyers shortlist it against the StrongArm at the dealer counter.
Electric car trailer winch FAQ
Can I just mount a truck winch on the trailer?
Owners do — our car trailer winch guide ranks vehicle-class picks for exactly that. This guide is the electric trailer-class answer: lighter, brake-focused, and sized by rolling load.
Why does the brake matter more than the rating here?
Because the failure moment on a car hauler is the car hanging at the crest while you reach for straps. The comparison table’s brake column is the safety column.
What about an enclosed trailer with a rear door?
Same winches; add a wireless remote (the Champion kit, or a wireless kit for your winch — our wireless remote guide) so you can steer the car and run the winch at once.
Dead car, flat tyres — which pick?
None of these at face value: a dead car is a drag, not a roll. Size up via the sizing table’s last row or double-line the StrongArm per its manual.
Our verdict
Car haulers, electric: StrongArm SA9000DC for the brake, Champion kit for wireless convenience, LT3000 for light cars honestly sized, Terra 35 for steel-line decks — and the deck discipline in the safety box whichever you buy.
Sources
- Dutton-Lainson StrongArm manuals and data: dutton-lainson.com; Champion: championpowerequipment.com; Superwinch/Westin: superwinch.com
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