Brand: National Model: Road Max ST Size: 235-80R16 235/80-16 235/80R16 235/80/16 235-80-16 235 80 16 2358016 Tread Depth: 8/32 Treadlife: N/A Season: All Season Performance: Highway Car Type: Trailer Load and Speed Rating: 127/122M Speed Rating Description: Speed Rated Up to 81 mph Section Width: 235 Aspect Ratio: 80 Rim Diameter: 16 Production Year (DOT): N/A