225/75D15 Trailer Tire with 15? Galvanized Spoke Rim Tire Size: 225/75D15 Load Range: D Tire Weight Rating: 2540 Lbs. Max. Pressure: 65 PSI Bolt Configuration: 6 Lug 5.5" Center - See diagram for fitment Pre Mounted Bias Ply Tire On Steel Wheel Center Bore: 4.25"