| 摘要 |
Edges of the tread are defined by its width (TW). Each runs into the region of a fourth, shoulder radius, where transition is made to the sidewalls. The radius TRA is given by 0.05 TR1 ≤ TR2 ≤ 0.65 TR1. TR2 is either smaller or greater than TRA. When TR2 is less than TRA, TR2 is given by 0.05 TR1 ≤ TR2 ≤ 0.6 TR1. When greater, TR2 is given by 0.1 TR1 ≤ TR2 ≤ 0.95 TR1. Preferred features: The radius TRA is given by 0.15 ≤ TRA ≤ 0.65 TR1. For the case that TR2 exceeds TRA, TR2 is given by 0.6 TR1 ≤ TR2 ≤ 0.95 TR1. TR1 is determined from 3 TW ≤ TR1 ≤ 25 TW, especially from 3 TW ≤ TR1 ≤ 6 TW. The region including the tire crown, with radius TR1, is determined by spacing TW1 between two locations running symmetrically about the tire crown. The size of TW1 is given by 0.1 TW ≤ TW1 ≤ 0.7 TW. Each region of radius TR2 reaches out to two locations in the outer contour, running symmetrically about the crown. Their spacing TW2 is given by 0.15 TW ≤ TW2 ≤ 0.9 TW. Transitions to the shoulder radii are each effected at spacing RA from tread edges, which amounts to 1.5 -14%, especially 3 -10% of the tread width TW. |
