Rubber blocks affixed for the strap suit in the rain grooves in the tire to get a safe fit. The ratchet around the strap is then tightened to secure the vehicle tow strap in position. This technique of auto hauler wheel straps is a superb choice for stock cars, https://strapsforcarhauler57665.blogkoo.com/the-smart-trick-of-car-hauler-straps-that-nobody-is-discussing-49556066