Amazon.com : Challenge Grifo Cross Open Tubular Tire (Clincher) (Black/Brown, 33-mm) : Bike Tires : Sports & Outdoors
Amazon.com : SCHWALBE - Johnny Watts All Terrian and Off Road Folding Clincher Bike Tire | 29 x 2.35 | Performance Line, RaceGuard, Addix, Double Defense | Black : Sports & Outdoors