Schwalbe racing ralph addix mtb tyre snakeskinthe schwalbe racing ralph addix mtb tyre is the perfect balance of speed and grip it has a low tread depth for high speed and low weight without sacrificing stability making it an excellent choice for cross country racing performs to an exceptional leveldesigned to provide rapid rolling when used on the rear wheel it rolls perfectly providing low rolling resistance and balanced traction so you can rely on where your rear wheel tracks due to its