Metzeler Karoo Street 90/90-21 54V T/L Front TyreMetzeler Karoo Street 90 90 21 54V T L Front Tyre The Karoo Street Tires are meant for ADV bike riders who are looking to trade a little bit of their bike's, rarely used, off road grip for a bit more on road performance. A high silicompound results in enhanced grip on pavement in both wet and dry, while the aggressive knobby pattern still provides excellent grip when your adventure strays off the tarmac. The Karoo Streets also boast a constant contact