Model Number: 31×10.50 R15 LT-#5581 Brand Name: FIREMAX Key Specifications/Special Features: 1. Zig-zag shoulder blocks provides outstanding driving power from on and off-roads to wet and dry roads2. Deep grooves design offers enhanced traction in deep mud and gravel3. Optimized wide grooves provide excellent water drainage and anti-hydroplaning performance4. Shoulder protector design maximizes load durability Sizes27x8.50R14 LT 31x10.50R15 LT 33x12.50R15 LT 33x12.50R17 LT 33x12.50R18 LT LT 265/70R17 LT 285/70R17 LT 235/75R15 LT 245/75R16 LT 265/75R16 LT 285/75R16 LT 285/75R16