ST225/75D15 LRD 8 PR Eco-Trail Bias Trailer Tire on 15" 6 Lug White Spoke Trailer Wheel Size: 225/75D15, Load Range: D, Ply Rating: 8 Capacity: 2,540 Lbs @ 65 Psi Speed Rating: 75 Mph Diameter: 28.7", Width: 8.4" Bolt Pattern: 6 on 5.5"