Brand: Delinte Model: Thunder D7 Size: 255-40R18 255/40-18 255/40R18 255/40/18 255-40-18 255 40 18 2554018 Tread Depth: 10/32 Treadlife: N/A Season: All Season Performance: High Performance Car Type: Passenger Load and Speed Rating: 99W Speed Rating Description: Speed Rated Up to 168 mph Section Width: 255 Aspect Ratio: 40 Rim Diameter: 18 Production Year (DOT): N/A