Pre-Mounted ST205/75R15 Radial Trailer Tire on Rim – 15″ Silver Modular Style Wheel with a 5 Lug on 4.5″ Center Bolt Pattern. Tire is Load Range C, 6 Ply Radial, with Max Load of 1820 pounds and Max Pressure of 50 PSI. Aspect Ratio 75, Section Width 205, and Rim Diameter 15 Inches. Speeding Rating M with Load Index 101. Tread Depth 7.8/32nds. Center Bore 3.19″ and Offset “0” with Hub Stud Nut Requirement of 1/2-20 60 Degree Cone Nut. (note: some tires will have slight dip/indent on sidewall, called a splice, it occurs in manufacturing, this is not a defect in any way). Warranty Included Tire Size: 205/75R15 Load Range: C – 6Ply Bolt Configuration: 5 Lug 4.5″ Center – See Diagram in Images for Fitment/Measuring Weight Rating: 1820 lbs. Max Pressure: 50 PSI Pre-Mounted, Easy Install Trailer Tire Assembly with Warranty Durable, Reliable, and Top Quality Construction Strong sidewalls to protect against puncture, improved tread pattern to displace water in wet conditions and improve traction.