The Speedster is a high performance race and dirt jump tire designed for speed and minimal drag on hard packed or paved terrain in wet or dry conditions. Features: Honeycomb center tread provides added traction and increased speed with very low rolling resistance; large diamond shaped side knobs give extra grip and cornering control Large diamond shaped side knobs give extra grip and cornering control Specs: Tire Bead Folding Weight 270 TPI 90 Tire Diameter 20" Weight (oz) 10 PSI 110 Tire Intended Use BMX Labeled Size 20 x 1 3/8 Tire Type Clincher Color Black Defined Color Black ISO Width (mm) 35mm ISO Diameter 451/ 20 x 1-1/8", 1-3/8" See Also: MA9918