Glossary
Cupping
A wear pattern characterized by repeating scalloped dips or high-and-low spots around the tire circumference, usually caused by suspension bounce — worn shock absorbers, loose wheel bearings, or damaged suspension components. Also called scalloping. The irregular contact pattern wears the tread unevenly at the bounce frequency.
Real-World Use
A steer tire with cupping is balanced and rotated, but the new tire develops the same pattern within 20,000 miles — a wheel-end inspection finds worn bearings that were not checked in the prior tire service.
What to Pair It With
Read this term with the full tire sidewall, vehicle rating information, manufacturer documentation, and the actual condition of the tire.
This site is for general information only. It does not replace professional tire service, DOT compliance advice, tire manufacturer instructions, vehicle manufacturer recommendations, or fleet policy.