Brand: Bridgestone Model: Potenza RE97AS Size: 225-40R18 225/40-18 225/40R18 225/40/18 225-40-18 225 40 18 2254018 Tread Depth: 11/32 Treadlife: 45,000 miles Season: All Season Performance: High Performance Car Type: Passenger Load and Speed Rating: 92W Speed Rating Description: Speed Rated Up to 168 mph Section Width: 225 Aspect Ratio: 40 Rim Diameter: 18 Production Year (DOT): N/A