Popular go-kart, ATV tire, new. Used on many Go-karts and ATV's. 2- 145/70-6 knobby tubeless tire (you can use tube if you have a two piece wheel). Can use 13x5.00-6 tube. Popular go-kart tire for off-road use.The item "Tires Go-kart ATV Minibike, 145/70-6 Knobby Tires 4915 Set of 2" is in sale since Friday, April 4, 2014. This item is in the category "Sporting Goods\Outdoor Sports\Go-Karts (Recreational)\Parts & Accessories". The seller is "gopowersports" and is located in Keller, Texas. This item can be shipped worldwide.