Brand: Ironhead Model: ITR231 Size: 255-70R22.5 255/70-22.5 255/70R22.5 255/70/22.5 255-70-22.5 255 70 22.5 2557022.5 Tread Depth: 16/32 Treadlife: N/A Season: All Season Performance: Highway Car Type: Commercial Load and Speed Rating: 140/137M Speed Rating Description: Speed Rated Up to 81 mph Section Width: 255 Aspect Ratio: 70 Rim Diameter: 22.5 Production Year (DOT): N/A