Brand: Arroyo Model: Grand Sport A/S Size: 275-40R18 275/40-18 275/40R18 275/40/18 275-40-18 275 40 18 2754018 Tread Depth: 7/32 Treadlife: 40,000 miles Season: All Season Performance: High Performance Car Type: Passenger Load and Speed Rating: 99Y Speed Rating Description: Speed Rated Up to 186 mph Section Width: 275 Aspect Ratio: 40 Rim Diameter: 18 Production Year (DOT): N/A