Winter Towing: What Changes and What to Check

Winter towing is not a different skill so much as the same skill with the margins removed. Everything that was forgiving in July - a slightly soft tire, a breakaway battery nobody has checked, a trailer loaded a little light on the tongue - stops being forgiving when the surface has less grip and the stopping distances double. The useful approach is to go through the rig component by component and ask what the cold does to each one.

Brake controller gain is a setting for a load and a surface, not a number you set once and own forever. On dry pavement you raise gain until the trailer brakes just lock briefly under manual override, then back it off. On a cold, wet or icy surface that same setting locks the trailer wheels far sooner, and locked trailer wheels are exactly how a trailer starts to come around.

Start lower than your summer figure, then re-set it with the manual override on a quiet stretch at low speed, on the surface you are actually driving on. The full gain procedure is worth re-reading at the start of every winter.

1. 1Double or triple the following distance you would use unloaded. Stopping distance grows with weight and again with reduced grip, and the two compound rather than add.
2. 2Brake early, gently and in a straight line. Braking in a curve asks the same tires to do two things at once, and in winter there is not enough grip for both.
3. 3Treat bridges, overpasses and shaded bends as ice. They freeze first and thaw last, and they are exactly where a long rig has least room to recover.
4. 4Avoid stopping on an upgrade if you can. Getting a loaded rig moving again on a slick incline is much harder than keeping it moving.
5. 5Give yourself a bigger gap for lane changes. A wider trailer plus a salted, spray-covered mirror is less visibility than you are used to. Clean the mirrors at every stop.
6. 6Slow down well before you think you need to. Every winter towing incident reads the same way afterward: the speed was fine until it suddenly was not.

• Chocks that grip, in a size that suits your tires. A plastic chock on a packed-ice pad is doing less than you think. Use two, on both sides where the ground is sloped, and put them in before unhitching rather than after.
• A breakaway kit with a matched battery and charger. The switch is simple and reliable; the battery is the consumable, and cold is what exposes it. Attach the cable to the vehicle itself, never to the safety chains.
• Safety chains rated at or above the trailer's gross weight. Hardware-store chain of unknown grade is the wrong economy. Hooks with latches stay put on rough, frozen surfaces where unlatched hooks can bounce free.
• A way to measure tongue weight at home. Winter is the wrong season to find out that your trailer sits at 7 percent on the ball. What tongue weight is and why it matters explains the band.

Quick picks

Tap any row to jump to the full write-up. How these are chosen - and what we do and do not claim to know - is published in full on our research methodology page.

#	Product	Best for	Our read	Price
1	Camco Trailer Wheel Chocks Non-negotiable	Every trailer, without exception	Chocks before unhitching, more so on a frozen slope	Check price on Amazon→ #ad Affiliate link - we publish no price; Amazon shows the current one
2	CURT Trailer Breakaway Kit with Battery Test this first	Braked trailers, where required	The battery cold weather quietly finishes off	Check price on Amazon→ #ad Affiliate link - we publish no price; Amazon shows the current one
3	CURT Safety Chain Assembly with Hooks Replace if worn	Replacing worn or unrated chains	Rated chain and hooks, crossed under the tongue	Check price on Amazon→ #ad Affiliate link - we publish no price; Amazon shows the current one
4	Sherline Trailer Tongue Weight Scale Loading discipline	Measuring tongue weight at home	Low tongue weight is worse on a slick road	Check price on Amazon→ #ad Affiliate link - we publish no price; Amazon shows the current one

1. Non-negotiable

Camco Trailer Wheel Chocks

Camco · Best for every trailer, without exception

Chocks go in before you unhitch, every time. They are not an upgrade and they are not interesting; they are the thing standing between a parked trailer and a slow roll down a campground slope.

We have not sourced a full specification table for this model from the manufacturer’s own site at a stable address. Rather than repeat figures we cannot cite, the assessment above is limited to what the design and the maker’s published description genuinely establish.

What works

• +Cheap insurance against the most preventable trailer accident there is
• +Works on any trailer regardless of brakes or jack type
• +Takes seconds and needs no setup

What does not

• −Plastic chocks degrade in sun over several seasons
• −Easy to leave behind at a site

Skip it if

There is no situation where you should skip chocks - if these do not suit your tire size, buy different ones rather than none.

Check price on Amazon→

#ad Affiliate link - we publish no price; Amazon shows the current one

2. Test this first

CURT Trailer Breakaway Kit with Battery

CURT · Best for braked trailers, where required

The switch and battery that apply the trailer's electric brakes if the trailer separates from the tow vehicle. Most states require it on braked trailers above a weight threshold, and the battery is the part everyone forgets to test.

We have not sourced a full specification table for this model from the manufacturer’s own site at a stable address. Rather than repeat figures we cannot cite, the assessment above is limited to what the design and the maker’s published description genuinely establish.

What works

• +Applies the trailer brakes automatically in a separation
• +Sold as a complete kit, so the battery and charger match the switch
• +Addresses a legal requirement in most states for braked trailers

What does not

• −The battery degrades silently and needs periodic load testing
• −Cable must be attached to the vehicle, not to the safety chains

Skip it if

Not applicable to a trailer with no electric brakes - check what your trailer actually has before buying.

Check price on Amazon→

#ad Affiliate link - we publish no price; Amazon shows the current one

Raw specifications: CURT’s own page. We earn nothing on that link.

3. Replace if worn

CURT Safety Chain Assembly with Hooks

CURT · Best for replacing worn or unrated chains

Replacement safety chains with rated hooks. Two things decide whether chains do their job: the rating has to meet or exceed the trailer's gross weight, and they have to be crossed under the coupler so they cradle it if the ball lets go.

We have not sourced a full specification table for this model from the manufacturer’s own site at a stable address. Rather than repeat figures we cannot cite, the assessment above is limited to what the design and the maker’s published description genuinely establish.

What works

• +Rated assemblies, rather than hardware-store chain of unknown grade
• +Hooks sized to engage a receiver loop properly
• +Cheap relative to what they are insuring against

What does not

• −Length must be right - too long drags, too short binds in turns
• −Hooks without latches can bounce off on rough surfaces

Skip it if

Do not buy a set rated below your trailer's gross weight to save money - that is the one specification on the whole part that matters.

Check price on Amazon→

#ad Affiliate link - we publish no price; Amazon shows the current one

Raw specifications: CURT’s own page. We earn nothing on that link.

4. Loading discipline

Sherline Trailer Tongue Weight Scale

Sherline · Best for measuring tongue weight at home

A dedicated scale you sit under the coupler to read tongue weight directly, with no arithmetic and no trip to a weighbridge. It is the one tool on this site that turns the single most important towing number from a guess into a measurement.

We have not sourced a full specification table for this model from the manufacturer’s own site at a stable address. Rather than repeat figures we cannot cite, the assessment above is limited to what the design and the maker’s published description genuinely establish.

What works

• +Direct reading, with no bathroom-scale-and-lever arithmetic
• +Repeatable, so you can see what moving the load actually does
• +Mechanical gauge with no batteries to be flat when you need it

What does not

• −Must be used on level ground with the coupler at towing height
• −Single-purpose tool that spends most of its life in a cupboard

Skip it if

Unnecessary if your hitch already has a built-in gauge, or if you have a public scale nearby and are happy to use it.

Check price on Amazon→

#ad Affiliate link - we publish no price; Amazon shows the current one

Raw specifications: Sherline’s own page. We earn nothing on that link.

• Rinse the underside, chains, coupler, ball and connector with fresh water. Road brine does not stop working when you get home.
• Dry and protect the electrical connector. Corrosion in a 7-way is the most common winter trailer fault and it starts with salt spray sitting in the pins.
• Re-grease the ball and coupler socket once everything is dry. What to grease and what to keep dry matters here, because grease on a friction sway control face disables it.
• Put the breakaway battery on charge. It will not recover on its own over a cold month in a driveway.
• Check the hubs for heat at your first stop on the next trip. A hub noticeably hotter than its partner is a bearing telling you something.

None of this is difficult and most of it takes minutes. The reason to make it a routine is that winter removes the margin that lets an un-serviced rig get away with things in summer - and the places it catches people out are shoulders, ramps and bridges, which are the worst places to find out.