The Goodyear Wrangler Authority A/T 31X10.50R15LT 109Q All-Terrain Tire has large center tread blocks to help provide enhanced traction and stability. Self-cleaning shoulder blocks to help provide enhanced dirt, gravel and mud traction. Zigzag microgrooves to help provide enhanced traction in rain, snow and ice. Rugged tread rubber that helps resist tread block chipping, chunking and tearing. Rim protection that helps provide wheels from accidental curb damage.