How to attach a tow strap correctly

A tow strap connects to a rated recovery point on each vehicle using the strap’s sewn loops or D-shackles, never a knot. Anchor to a frame-mounted tow hook, recovery point, or hitch receiver shackle mount. Skip the trailer hitch ball, skip the bumper, skip the tie-down loops on the body. Most strap failures come from the wrong anchor point, not from the strap itself breaking.

A tow strap is a flat nylon or polyester strap with sewn-in loops at each end. A recovery strap is the same shape but built to stretch under load, which helps yank a stuck vehicle free with kinetic energy. They are not interchangeable in heavy use. Tow straps tow, recovery straps recover, and if you are pulling a stuck vehicle hard, you want the recovery strap.

What you need

• A rated tow or recovery strap. Look for a printed working load limit (WLL) on the label. A 2 in strap is typically 6,000 to 10,000 lb WLL. A 3 in is 10,000 to 20,000 lb WLL.
• Two rated D-ring shackles, screw-pin or bolt-type, sized to match. 3/4 in shackles are rated about 9,500 lb working load. 7/8 in shackles are about 13,000 lb.
• Identified recovery points on both vehicles. Owner’s manual location, not “looks like a hook”.
• Heavy blanket or dampener to drape over the middle of the strap.

How to attach the strap

1. Find the rated recovery point on the towing vehicle. On most trucks and SUVs, that is a frame-mounted hook at the front or a rear receiver hitch. The shipping tie-down loops on a passenger car are rated for ship deck tie-down, not pulling, and they bend.
2. Find the rated recovery point on the stranded vehicle. Often hidden behind a plastic plug in the front or rear bumper. The owner’s manual shows the location. Modern cars include a threaded eye that screws into the bumper for recovery, usually stored with the spare tire kit.
3. Connect with shackles. Run the strap’s loop through the shackle, then through the recovery point, then close the pin. Screw-pin shackles need to be finger-tight, then backed off a quarter turn so they do not seize under load.
4. Lay the strap flat with no twists. Twists concentrate force on a small section and double the risk of failure.
5. Drape a heavy blanket, jacket, or commercial dampener over the middle. If the strap snaps under load, the shackle or torn end becomes a projectile. The dampener pulls it straight to the ground.
6. Pull slack out, but do not pre-load the strap. Recovery strap stretch is the point of recovery straps, but tow straps should be near-taut before motion.

Pulling technique

• The pulling vehicle moves forward steadily, no jerk. For a recovery strap with kinetic energy, allow 10 to 15 ft of slack and pull at 5 to 10 mph to generate stretch energy. For a tow strap, no slack, no jerk, just steady forward pressure.
• The stranded vehicle (if driver-capable) puts the transmission in neutral, parking brake off, key in run position so the steering wheel is unlocked. The driver steers and brakes if there is brake function.
• No passengers in the towed vehicle unless absolutely necessary, and never in the bed of a truck.
• Communicate. Hand signals or radios. The two drivers need to agree on stops.

Anchor points to never use

• Trailer hitch ball. The ball is rated for vertical tongue load, not lateral pull. Balls snap and become projectiles.
• Plastic bumper covers or the steel bumper beam underneath if it is not frame-mounted.
• Tie-down loops on the unibody (shipping anchors). They are not rated for towing loads.
• Suspension components: control arms, sway bars, tie rods, axles. These bend.
• Tow loops that you cannot identify. If you cannot find it in the manual, do not pull on it.

Joining two straps together

The wrong way is a knot. Knots reduce nylon strap strength by up to 50 percent and turn into welded-on lumps after a load cycle. The right way:

• With shackles. Connect the two strap loops with a D-shackle. Loop A’s eye through the shackle, loop B’s eye through the same shackle, close the pin.
• Sleeve method. Pass strap A’s loop through strap B’s loop, then pass strap B’s full length through strap A’s loop, pull through. Place a rolled towel or a piece of wood in the joining hole before pulling tight. This keeps the joint from welding under load and makes it possible to undo.

Either way, expect to lose roughly 10 percent of total strap rating at the joint.

Strap care

• Inspect before each use. Check for cuts, frays, melted spots, sun bleaching, and chemical staining. Any visible damage retires the strap.
• Store coiled in a dry bag. UV degrades nylon. A strap left in a truck bed for two summers can lose 30 percent of its strength.
• Keep straps off road salt and oil.
• Rinse with fresh water after a muddy recovery, hang to dry before storage.

A strap that has taken a near-rated load (you felt it stretch hard, you saw it strain) should be retired. The fibers do not return to original strength after a heavy stretch.

Common mistakes

• Using a tow strap with a metal hook sewn onto each end instead of a sewn loop and shackle. The hooks unhook under load when the angle changes. Sewn loops with proper shackles are the standard.
• Reusing a strap with melted spots from past friction. Heat damage is structural damage.
• Towing on a road faster than 25 mph with a strap. Straps lose tension on every brake input, slack snaps tight, the lead vehicle gets jerked. Towing more than a quarter mile on the road is what tow trucks are for.
• Strap diameter mismatched to the load. Towing a 7,000 lb truck with a 2 in strap rated for 6,000 lb is asking for failure.