Dig even deeper! 6-ply rated extra-tough casing resists punctures. Same great tire now with deeper tread. Angled knobs dig into the terrain for maximum traction. Center lugs provide extra traction and better control. Built-in rim guard protects your wheel from dings / dents. Long-range tread compound. Tire Specifications: Ply rating: 6. OD inches: 27. SW inches: 9. Maximum load: 440 pounds. Maximum PSI: 7. Tread depth: 32.00 mm. Weight: 26.37 pounds.