Brand: Armstrong Model: Tru-Trac AT Size: 31-10.50R15 31-10.50-15 31X10.50R15 31/10.50/15 31-10.50-15 31 10.50 15 3110.5015 Tread Depth: 15/32 Treadlife: 60,000 miles Season: All Season Performance: All Terrain Car Type: Light Truck Load and Speed Rating: 109S Speed Rating Description: Speed Rated Up to 112 mph Section Width: 10.50 Aspect Ratio: N/A Rim Diameter: 15 Production Year (DOT): N/A