The Surly Bud Folding 26x4.8 Fat Bike Tyre are designed for 26 inch super wide rims such as our 100mm Clown Shoes, Bud and Lou are, to quote one of our designers, designed as a front and rear pair. Exciting stuff. He goes on to say, They are meant to be the wildest, gnarliest, oh my god my face is bleeding tires available. The footprint is massive (larger than Big Fat Larry) and the tread is aggressive. This combination is going to keep you moving in the most demanding soft conditions any bicycle will attempt. You could say these tires are 4.8 Nates, but they are so much more than that. For example, their tread height is a staggering 7mm (6mm on Nates, 4.2mm on Larrys). They measure about 30.8 in diameter, inflated, and their casing is 120tpi with a Kevlar folding bead. Surly Bud Folding 26x4.8 Fat Bike Tyre Features 120 TPI  Folding Tyre 26x4.8 inch