eCustomRim 2-Pack Trailer Tire On Rim ST175/80D13 13 in. Load C 4 Lug Galvanized Spoke Tire Size: 175/80D13 Load Range: C Tire Weight Rating: 1100 Lbs. Max. Pressure: 50 PSI Bolt Configuration: 4 Lug 4" Center - See diagram for fitment Pre Mounted Bias Ply Tire On Steel Wheel Center Bore: 3.19"