Radial motorcycle tires

A radial tire having a very flexible and very short sidewall which consists essentially of a ground contacting tread region reinforced between its edges by a breaker structure and having a substantially curved profile in the radial cross-section of the tire, a pair of tire beads each reinforced by a substantially inextensible bead reinforcement hoop and a tire sidewall disposed between each tread edge and bead region, wherein each sidewall is reinforced by not more than two mutually contacting layers of carcass ply reinforcement for at least 80% of the length of the sidewall from the tread edge to the bead, such that the 80% or more of the sidewall is substantially flexible, the tire sidewalls edges and the length of the tire sidewalls each extending radially and axially inwardly of the tread edges and the length the tire sidewalls being less than 35% of the tire sectional height whereby the sidewalls are short and flexible.