1 results about "Increasing weight" patented technology

The goal is to suppress taxi wear and touchdown wear while ensuring high fracture pressure without significantly increasing weight. [Solution] In the first reference state, the conditions 0 ≤ δ35 / Rc ≤ 0.004 and 0.015 ≤ δ90 / Rc ≤ 0.025 are satisfied, and the belt layers 5a to 5i include two or more spiral belt layers 51 and one or more zigzag belt layers 52, and the two or more spiral belt layers 51 include a first spiral belt layer 511 whose tire width direction edge 51c is located outside the tire width direction of the shoulder circumferential groove 812, and a second spiral belt layer 512 whose tire width direction edge 51c is located between the center circumferential groove 811 and the shoulder circumferential groove 812.