Brand: National Model: Road Max ST Size: 205-75R15 205/75-15 205/75R15 205/75/15 205-75-15 205 75 15 2057515 Tread Depth: 8/32 Treadlife: N/A Season: All Season Performance: Highway Car Type: Trailer Load and Speed Rating: 101/97M Speed Rating Description: Speed Rated Up to 81 mph Section Width: 205 Aspect Ratio: 75 Rim Diameter: 15 Production Year (DOT): N/A