Panaracer`s latest development features a brand new tread design with fast rolling centerline well spaced shoulder lugs and pronounced raised corner knobs . Gravel King R spec tires are lighter weight fast rolling and more supple and flexible than the standard Gravel King line. Improved bead and TuffTex R casing offers a secure fit and improved puncture protection while also being lighter weight and more flexible. Specially designed tread offers big traction but maintains smooth predictable transfers in the corners. ZSG gravel specific compound is designed to perform in all temperatures on gravel and road