Glossary
Tread rib
A continuous circumferential ridge of rubber on the tread face, defined by the grooves on each side. Rib tires — used primarily in steer and highway drive positions — have wide, continuous ribs that minimize tread movement and maximize even wear and fuel efficiency.
Real-World Use
A technician measuring only center tread misses that the inside shoulder rib on a steer tire is 2/32 inch lower — measuring all ribs reveals the pattern.
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.