US 12,434,512 B2
Motorcycle tire set
Masafumi Otani, Hyogo (JP); and Ryota Sato, Hyogo (JP)
Assigned to SUMITOMO RUBBER INDUSTRIES, LTD., Hyogo (JP)
Filed by SUMITOMO RUBBER INDUSTRIES, LTD., Hyogo (JP)
Filed on Dec. 28, 2023, as Appl. No. 18/398,415.
Claims priority of application No. 2023-009622 (JP), filed on Jan. 25, 2023.
Prior Publication US 2024/0246365 A1, Jul. 25, 2024
Int. Cl. B60C 11/13 (2006.01); B60C 11/03 (2006.01); B60C 19/00 (2006.01)
CPC B60C 11/1392 (2013.01) [B60C 11/0302 (2013.01); B60C 11/032 (2013.01); B60C 11/1323 (2013.01); B60C 19/001 (2013.01); B60C 2011/0374 (2013.01); B60C 2011/0376 (2013.01); B60C 2011/0381 (2013.01); B60C 2200/10 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A motorcycle tire set comprising a front wheel tire and a rear wheel tire, wherein
each of the front wheel tire and the rear wheel tire includes a tread portion having a designated tire rotation direction,
each of the tread portions of the front wheel tire and the rear wheel tire has a plurality of inclined grooves provided so as to be inclined with respect to a tire circumferential direction,
each of the plurality of inclined grooves includes a first portion extending in a crown region, a second portion extending in a shoulder region, and a third portion connecting the first portion and the second portion,
the third portion has a smaller groove width than the first portion and the second portion, the first portion, the second portion, and the third portion are inclined in the same direction with respect to the tire circumferential direction,
the third portion includes a pair of groove edges,
the pair of groove edges include a first groove edge located on a leading edge side in the tire rotation direction, and a second groove edge located on a trailing edge side in the tire rotation direction,
only the first groove edge of the front wheel tire is provided with a chamfered portion,
only the second groove edge of the rear wheel tire is provided with a chamfered portion,
a sum of a width of the chamfered portion and a groove width of the third portion, at a tread surface of the front tire, is greater than the groove width of only the third portion at any position of the third portion in the radial direction of the front tire, and
the chamfered portion on the first groove edge of the front wheel tire and the chamfered portion on the second groove edge of the rear wheel tire are positioned asymmetrically with respect to each other, as well as with respect to their tire equators, to cooperatively enhance wear resistance and appearance in both the front and rear tires.