Patent ID: 6073668
Filing Date: 2000-06-13
Classification: B60C

Abstract:
A vehicle tire comprising a tread portion having a profile whose radius of curvature decreases substantially continuously from the tire equator at the surface of the tread portion to tread edges and whereinthe tread profile in the range from the tire equator at the surface of the tread portion to each said tread edge is defined by a curve which is substantially an elliptic curve,the tread edges are axially outermost edges of the ground contacting patch of the tire when the tire is mounted on a standard rim and inflated to a standard pressure and loaded with a standard load, andin the following x-y coordinates: the origin is set on the surface of the tread portion at the tire equator; the x-axis extends from the tire equator towards each tread edge in parallel with the axis of the tire; and the y-axis extends radially inwards along the tire equator from the surface of the tread portion, the equation of the elliptic curve is ##EQU10##