Chaoyang 20x4.0 Electric Bike Fat Tires All-Terrain Tires Mountain Bike TiresModel: 20 x 4. 0(100 599) inch; Max Inflation to 60 P. S. I; All terrain anti slip and low noise tires. Wide tire thickness: excellent puncture resistance and premium rubber, abrasion resistance, high and low temperature resistance, suitable for urban and rural road driving on wet, cement, asphalt, asphalt and steep pavement, Increases the cushioning effect when driving over bumpy roads Fat outer tires Applicable to: fat bikes, e bikes, snowmobiles,