Pneumatic tyre

摘要

A pneumatic tyre comprises a tread portion (2) provided with two circumferential grooves (9) to divide the tread portion into a pair of shoulder parts (10) and a central part (11) therebetween, each of the circumferential grooves (9) has such a relatively wide width that the maximum axial width (GWmax) thereof in the foot print (P) is not less than 35 mm, and in a meridian section of the tyre, the axially inner sidewall (9i) of each circumferential groove is substantially straight and inclined axially inwards, and the axially outer sidewall (9o) of the circumferential groove comprises a convex part (14) extending axially outwardly to a merge point (X) at which the convex part merges into a ground contacting top surface (2a) of one of the shoulder parts (10). <IMAGE>