Brand: Arroyo Model: Grand Sport A/S Size: 285-45R21 285/45-21 285/45R21 285/45/21 285-45-21 285 45 21 2854521 Tread Depth: 10/32 Treadlife: 40,000 miles Season: All Season Performance: High Performance Car Type: Truck/SUV Load and Speed Rating: 113W Speed Rating Description: Speed Rated Up to 168 mph Section Width: 285 Aspect Ratio: 45 Rim Diameter: 21 Production Year (DOT): N/A