Bridgestone Potenza RE970AS Pole Position Radial Tire - 215/50R17 95W SILICA ENRICHED TREAD COMPOUND - Supports enhanced wet and dry performance 3-D SIPING - Improves braking and traction CONTINUOUS CENTER RIB - Helps improve steering response 3-D STEALTH BLOCK DESIGN - Improves all-season capabilities SILICA ENRICHED TREAD COMPOUND - Supports enhanced wet and dry performance 3-D SIPING - Improves braking and traction CONTINUOUS CENTER RIB - Helps improve steering response 3-D STEALTH BLOCK DESIGN - Improves all-season capabilities