Brand: Royal Black Model: Racing Trac Size: 225-50R18 225/50-18 225/50R18 225/50/18 225-50-18 225 50 18 2255018 Tread Depth: 7/32 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: 225 Aspect Ratio: 50 Rim Diameter: 18 Production Year (DOT): N/A