* ZSG GRAVEL compound Featuring a specialized gravel specific compound crafted from our proprietary ZSG (Zero Slip Grip) material. ZSG ensures remarkable resistance to temperature and weather fluctuations, ensuring consistent rubber performance across a spectrum from near freezing to scorching temperatures. performs lower Rolling Resistance and Grip for bothGravel and Tarmac.* TuffTex + Increases resilience with a dual layer of bead to bead TuffTex material, providing additional puncture resistance and heightened security in the most challenging conditions.* BeadLock our redesigned bead is engineered to accommodate a broader range of rims, including both hookless and clincher types. In most instances, mounting the tire can be effortlessly achieved with a standard floor pump.