Teravail Cannonball TyreDetails GRAVELCannonball is a go to gravel race tire for normal conditions. The tread pattern features a directional, tight knit center tread that sheds dirt and debris to decrease rolling resistance, and side knobs for effective cornering traction. Cannonball is built for all around gravel riders and racers. HOW IT WORKS Center lugs are raised and ramped for rolling efficiency; the diamond shaped lugs squeeze in for grip as they contact dirt, then