Schwalbe Racing Ralph Super Race Addix Speed Transparent Skin TireA fast and versatile XC profile paired with Addix Speed Compound makes Racing Ralph an XC weapon and an ingenious addition to Racing Ray. Developed especially for the rear wheel, the tire convinces with many grip edges in the middle area for great traction and excellent acceleration. Thanks to its fast and versatile XC profile, it also has excellent rolling properties. Laterally arranged tread blocks that protrude far into the running surface offer