| 摘要 |
A pneumatic tire adapted to effectively suppress temperature rise of a tread portion during loaded rolling of the tire, and sufficiently suppress failure of the tread portion due to the temperature rise. The tread portion of the pneumatic tire extends between both tread ends and has a tread surface with lug grooves. Each lug groove extends in a tire width direction and has an opening at its one end to a buttress that extends from the tread end radially inwards of the tire. The buttress has a surface with a projection on one side, in a tire circumferential direction, of the buttress-side opening of the lug groove to protrude in the tire width direction. The projection has a radially outer end in a radially outer side than a radially inner end of the buttress-side opening of the lug groove. |
