BQLZR Black Rubber Slick Tires & Blue Aluminum Alloy 10 Spokes Wheel Rims for 1:10 RC Racing Flat Car Pack Of 4 lightweight, convenient to use, durable the smooth tire can reduce resistance, run faster The whole tire's outer diameter is about 63mm/ 2.48" Tire inside diameter:52mm/2.05" The tire width is 26mm/ 1.42"