Brand: RubberMaster Model: S368 Size: 18.5-8.50-8 18.5-8.50-8 18.5X8.50R8 18.5/8.50/8 18.5-8.50-8 18.5 8.50 8 18.58.508 Tread Depth: 8/32 Treadlife: N/A Season: All Season Performance: Highway Car Type: Trailer Load and Speed Rating: 78M Speed Rating Description: Speed Rated Up to 81 mph Section Width: 8.50 Aspect Ratio: N/A Rim Diameter: 8 Production Year (DOT): N/A