| 摘要 |
<p>This invention relates to a pneumatic tire which satisfies the relation L1 » F1 » L2 when first and second tread surface radii (TR1, TR2) defined below and the tire width (W) satisfy the relation: F1 = TR1/W, F2 = TR2/W, L1 = F2 x 4.3-2.46, L2 = F2 x 2.2-0.95 and which provides a shape of a ground-contacting surface giving a uniform ground contact pressure distribution: wherein the first tread surface radius (TR1) is defined as the radius of an arc passing one center point (P0) defined as the intersection of the tread surface with the tire equator and two second near points (P1) defined as the points on the tread surface each spaced from this center point (P0) on its both sides in the axial direction of the tire by a distance of 1/4 of the ground contact width (GW: i.e. GW/4); and the second tread surface radius (TR2) is defined as the radius of an arc passing two distant points (P2) defined as the points on the tread surface each spaced from this center point (P0) by a distance of 1/2 of the ground contact width (GW, i.e. GW/2) on its both sides in the axial direction of the tire.</p> |
