Bontrager XR2 Team Issue TLR Mountain Bike Tyre Standard Width. Legendary tyre designer Frank Stacy provides another race-proven design with the XR2 Team Issue mountain bike tyre. Its Tubeless Ready for fewer flats, & features a specifically-formulated compound for lightweight construction, enhanced cornering traction, & low rolling resistance. The XR2 tyre works best in firm trail conditions. These tyres come in three widths: Standard = 2.0 to 2.35 Mid Fat = 2.6 Fat = 3.0 Features A versatile trail tyre that excels in loose-over-hardpack & firm conditions Fast rolling with consistent, predictable traction for a variety of trail conditions Tubeless Ready (TLR) for easy tubeless setup & puncture protection Supple & strong Inner Strength casing provides lightweight sidewall protection Lightweight 120 TPI casing provides great ride feel & tyre performance