Schwalbe Romy Gravity ProRadial casing provides a larger contact patch for more grip and shock absorption Aggressive shoulder lugs provide great cornering traction and maximum control Closely spaced, shallower tread depth in the center gives low rolling resistance Great as a front or rear tire. Attributes Primary Color Black Bead Folding Tire Compound Soft Tire PSI 15 35 Tire Technology Gravity Pro Radial TPI 2x67TPI Tire Type Tubeless Ready Tire Width 2. 50 Tire Width Range