| 摘要 |
<p> A tire (10) having a designated rotation direction has: main grooves (14) multiply provided on a tread (12) with gaps interposed therebetween in the tire circumference direction, the main grooves extending from an inner end section (14A) positioned on the tread center section (12C) to the side opposite the tire rotation direction up to the tread end (12E), such that the angle (θ1) in relation to the tire width direction gradually becomes smaller; first subsidiary grooves (16) extending in the direction of the normal to main grooves (14) from the main grooves (14) to the tire rotation direction side, the first subsidiary grooves ending without reaching the main grooves (14) adjacent to the tire rotation direction; and second subsidiary grooves (18) provided closer to the tire equator (CL) side than the first subsidiary grooves (16), extending in the direction of the normal to the main grooves (14) from the main grooves (14) toward the tire rotation direction side and reaching the main grooves (14) adjacent to the tire rotation direction, the first subsidiary grooves (16) extending from the main grooves (14) adjacent to the tire rotation direction being disposed on an extension line of the second subsidiary grooves.</p> |
