What is the 7 7 rule for tires?

Written by Editorial Team | Last Updated: August 2026

The seven-seven rule for automotive tires is a safety and maintenance guideline used to determine when a tire's tread has worn down to a dangerous level. It states that if you insert a standard coin into the tread grooves and the wear reaches a specific marker—or if the remaining tread depth measures below certain safety minimums—the tires must be replaced immediately to maintain proper wet-weather traction, prevent hydroplaning, and ensure safe vehicle braking distances.

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