Bontrager XR4 Team Issue, 27.5 Inch MTB TyreYour go-to mountain bike tire for loose, rocky, rough trails -- wet or dry -- the XR4 Team Issue TLR mountain bike tire is designed to out-corner any XC tire on the market, with aggressive tread design, deep, lateral cupped blocks, long shoulder blocks and buttressed tread block edges. Inner Strength protection plus tubeless ready for fewer flats, lower pressure capability.Large braking surface for increased traction. Sipe and dimple design increases traction in wet or dry conditions. Open tread spacing is self-cleaning. Excels in loose and rocky conditions. TLR tyre is engineered for use with our own TLR sealant for worry-free setup and puncture protection. Inner Strength casing is lightweight sidewall protection that's also supple and strong