| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of effectively improving steering stability and resistance to partial wear. SOLUTION: An asymmetrical tread pattern in which three main channels G1 to G3 extending in the peripheral direction of the tire are arranged in two regions A, B divided by tire equator CL in a tread part with different number of channels is provided. An asymmetrical tread profile in which tread surface profile in the direction of tire width in the region A on one side having larger number of main channels among two regions A, B in the tread part is composed of two circular arcs CR1, CR2 and tread surface profile in the direction of tire width in the region B on the other side is composed of two circular arcs CR3, CR4 is provided. A connection point PA of the circular arcs CR1, CR2 is arranged on an outer side in tire radial direction more than a connection point PB of the circular arcs CR3, CR4 to make drop amount dA, dB at ground contact ends on both sides in the direction of tire width in the tread part 1 substantially equal. COPYRIGHT: (C)2004,JPO&NCIPI |
