Schwalbe Racing Ralph Tire - 29 x 2.35 Tubeless Folding Black/Transparent Evolution Super Race Addix Speed. Schwalbe Racing Ralph is a pure racing tire. In the third generation of the Racing Ralph everything is designed for speed.In the 29" variant the special arrangement of the blocks and their elongation have been adapted to the longer footprint Performance advantages of the large wheels are optimally improved TECH SPECS Color Black/Transparent Defined Color Tan Flat Protection Sidewall ISO Diameter 622 / Road / 29" ISO Width (mm) 60 Labeled Size 29 x 2.35 Tire Bead Folding Tire Diameter 29" Tire Intended Use Mountain Tire Type Tubeless Ready Clincher