Trailer Tire + Rim ST185/80D13 185/80D-13 13 ST Silver Modular Boat Camper RV Tire Size: 185/80D13 Load Range: C Tire Weight Rating: 1480 Lbs. Max. Pressure: 50 PSI Bolt Configuration: 5 Lug 4.5" Center - See diagram for fitment Pre Mounted Bias Ply Tire On Steel Wheel Center Bore: 3.19"