Brand: Firestone Model: Firehawk Indy 500 Size: 255-35R20 255/35-20 255/35R20 255/35/20 255-35-20 255 35 20 2553520 Tread Depth: 10/32 Treadlife: N/A Season: Summer Performance: High Performance Car Type: Passenger Load and Speed Rating: 97W Speed Rating Description: Speed Rated Up to 168 mph Section Width: 255 Aspect Ratio: 35 Rim Diameter: 20 Production Year (DOT): N/A