Latest Design- This is a solid tyre specially designed for 8.5 inch electric scooter. It adopts a new type of texture design, which optimizes the anti-skid performance and improves the grip ability.The polymer composite lightweight materials and the natural rubber ratio makes it equipped with high wear resistance and high heat resistance. Upgraded 25% Range per Full Charge- This explosion-proof&puncture-proof solid tire can travel 25% more mileage than other solid tires per full charge,it adopts polymer composite lightweight material, which can reduce the weight by up to 30%, and the compression ratio is more than 25%,so,it has a good cushioning effect and higher strength elasticity. At the same time, the grooved surface design can perfectly adapt to the unevenness of the road surface. Excellent Cruising Range- This upgraded solid tire has better cruising ability, it passed the fatigue test at a speed of 25 km/h at 3000 km/h,which can effectively reduce mileage anxiety.It also provided excellent stability, corrosion resistance and temperature resistance because it maintain excellent performance in a temperature range of -40 to 80C.And you also don't need to worry about getting punctured considering it's non-inflatable and tubeless design. Excellent Compatibility- This rubber tire requires no air,no inflation,no repair,no maintenance,no piercing and no inner tube,so you needn't to worry about being punctured.The outer diameter is 8.25 inches,inner diameter is 5.5 inches,width is 2 inches.Universal for front and rear wheel. Package includes:2 x solid tire and 1 x crowbars. Installation Method Before install this tire,please put it in boiling water for 15 minutes to soften it. We recommend that you watch related installation videos on youtube first.Correct installation can help our scooter tires get better performance and ensure your safety during use.