The bontrager xr4 tlr expert 26x235mm tyre the bontrager xr4 263939 team issue tubeless ready folding tyre is your tire for rough trails wet or dry the aggressive tread design with deep lateral cupped blocks long shoulder blocks and buttressed tread block edges is ideal for loose and rocky conditions designed to out corner any other tire on the market engineered for xc and trail riders in loose and rocky conditions inner strength casing on tlr team issue tires dramatically