Car Hauler Supplies
Vehicle Securement Systems
Professional auto transport securement systems generally fall into three categories:
- tire/wheel-based securement systems,
- frame-based securement systems,
- and axle-based securement systems.
Tire & Wheel-Based Securement Systems
Modern car haulers commonly secure vehicles by the tires rather than by the frame or suspension. Wheel-based securement systems accommodate a broad range of vehicle sizes while helping reduce stress on vehicle components. Wheel securement systems can be classified in terms of the number of points of contact they have with the securement system:
- Lasso straps and single-ratchet tire bonnets (1-point systems) — The strap lashes around the tire, then anchors to a single point - often a D-ring or rub rail - with a ratchet used for tensioning. commonly used on gooseneck and older wedge trailers, as well as some wheel lift assemblies.
- 8-point kits and double ratchet tire bonnets (2-point systems) — Similar to 1-point systems, the strap lashes around the tire, but is designed so that two strap ends can be attached and tensioned to the securement surface. commonly used on wedge and gooseneck trailers as well as rollback tow trucks (2-points x 4 tires = 8-point kit).
- Over-the-wheel straps (3-point systems) — A deck-mounted strap passes over the tire and through a guide positioned behind the wheel before being tensioned with either a hand ratchet or ratchet box, resulting in three points of contact with the tire.. These assemblies are widely used on modern commercial car hauler trailers, including stinger, high-mount, enclosed, and modern wedge trailers.
While all three systems secure vehicles by the tires rather than the frame, trailer design, vehicle type, and manufacturer requirements often determine which securement method is most appropriate.
Frame-Based Securement Systems
Frame-based systems utilize hooks that attach directly to structural portions of the vehicle using frame hook straps or cluster chain. This system of securement has become less common as OEMs have demanded that car hauling fleets utilize over-the-wheel strap securement systems.
Axle-Based Securement Systems
Axle securement systems use straps attached to axle or suspension components. These systems are sometimes used in enclosed transport, rollback towing, recovery operations, and specialty vehicle transport applications. However, caution should be taken in using this method, as too much tension can warp the axles.
