Use-downhill and dual-slalom riding and racing, Clydesdale riding. Structural Benefits-Exclusive, triple-hollow I-beam construction with nickel-plated brass eyelets. ABS center strip strengthens sidewall and spoke face. Used with great success on the DH circuit for three years. High brake track allows freedom with brake set-up and the concave surface grips brake pads better.30mm wide for tire stability and remarkable tracking during cornering