WTB Riddler Tire - 29 x 2.25 TCS Tubeless Folding Black Light Fast RollingWTB Riddler Tire 29 x 2. 25 TCS Tubeless Folding Black Light Fast Rolling. Named after WTB Athlete Nathan Riddle the Riddler hungers for speed yet hangs on in the corners remaining composed and unflappable just like Nathan Riddles riding style. Large supported toothy side knobs and densely packed low center tread make the Riddler a hit beyond the gravity enthused as multiple widths and wheel sizes also keep the cross country weight conscious happy