Schwalbe Racing Ralph Super Ground 29 Tire If you're looking for a tire with aggressive tread but without the bulk, the Schwalbe Racing Ralph Super Ground 29 Tire is your answer. It features low, fast-rolling center knobs for lower rolling resistance. The side knobs provide excellent cornering traction, making for a well-balanced, rear-specific cross-country tire. Schwalbe uses ADDIX Speed is outfitted with Schwalbe's Addix Speed compound, provides more traction, protection and is more durable than their base line performance tire, perfect for cross-country racing. Features Numerous grip edges in the tread center for super traction and excellent acceleration. Distinct shoulder studs for excellent lateral grip. Good rolling properties and extremely quiet a great addition to your XC bike Snake Skin protection bead-to-bead puncture protection Super Ground 3-ply carcass layer with Snake Skin protection SPECIFICATIONSSize29" X 2. 1"29" X 2. 25"29" X 2. 35"Conditions Hardpack, Soft, Soft Over Hardpack Hardpack, Soft, Soft Over Hardpack Hardpack, Soft, Soft Over Hardpack Bead Folding Folding Folding TPI676767Compound Addix Speed Addix Speed Addix Speed Protection Super Ground Super Ground Super Ground Type Clincher Clincher Clincher Tubeless Compatible Yes Yes Yes Intended Use XC, Trail XC, Trail XC, Trail Approximate Weight675g670g750g | Schwalbe | Racing Ralph Super Ground 29 Tire 29X2. 1 Super Ground Addix Speed Tle