Brand: Roadmaster Model: RM257 Size: 245-70R19.5 245/70-19.5 245/70R19.5 245/70/19.5 245-70-19.5 245 70 19.5 2457019.5 Tread Depth: 19/32 Treadlife: N/A Season: All Season Performance: Highway Car Type: Commercial Load and Speed Rating: 133/131N Speed Rating Description: Speed Rated Up to 87 mph Section Width: 245 Aspect Ratio: 70 Rim Diameter: 19.5 Production Year (DOT): N/A