WTB Weirwolf TCS Light 29 Mountain Tire. Mount the WTB WeirWolf TCS Light mountain bike tire on your cross country or enduro rig and find out why this 29 tire is truly a unique animal. Right away you'll find out this beast hungers for cornering. Its terraced side knobs progressively open working edges as this tire is forcefully pushed into turns. When it's time for flat out pedaling, the ramped center knobs and predictable, dense spacing leave no room for excuses when it comes time to blitzing the trail. On top of the stellar tread design there's also WTB's TCS and Light technology on board. TCS stands for Tubeless Compatible System so you can get all the performance advantages of a tubeless set up. Additionally, WTB's Light casing reduces rotating mass and contributes to a supple ride.