Moroso Drag Special front tires feature tubeless tire construction and a 2-ply nylon cord to reduce unsprung weight. The high cord angle, combined with a unique tread design, reduces rolling resistance for increased speeds, while their shallow tread depth increases stability at high speeds. Lastly, a stronger mounting bead withstands higher pressures when adjusting for roll-out. Recommended Rim Width 3.5-4 in. Tire Overall Diameter:25.2'' Average Roll Out/Circumference: 78.0'' Tire Tread Width: 3.5'' Wheel Diameter: 15'' Required Wheel Width: 3.5'' - 4.0'' Tire Weight: 10.0 lbs Recommmended Operating Pressure: 30-35 psi