Brand: Bridgestone Model: Potenza Sport AS Size: 235-40R18 235/40-18 235/40R18 235/40/18 235-40-18 235 40 18 2354018 Tread Depth: 10/32 Treadlife: 50,000 miles Season: All Season Performance: High Performance Car Type: Passenger Load and Speed Rating: 95Y Speed Rating Description: Speed Rated Up to 186 mph Section Width: 235 Aspect Ratio: 40 Rim Diameter: 18 Production Year (DOT): N/A