285/30R21 Bridgestone Potenza Sport 100(Y)From morning commutes to long weekends, the 285 30R21 Bridgestone Potenza Sport 100(Y) is built to make every mile count. Built by Bridgestone, the POTENZA SPORT emphasizes balance: grip when you need it and comfort when you want it. A durable Blackwall sidewall contributes to visual appeal and added resilience for urban and highway driving. An adaptive tread geometry helps evacuate water, stabilize cornering forces, and support braking when