TYRE FOR MOTORCYCLES Russian patent published in 2017 - IPC B60C11/12 B60C11/03 

FIELD: transportation.

SUBSTANCE: invention relates to tyres intended to be mounted on the wheels of motorcycles with medium/large engine displacement (e.g., 600 cm³ or more) and/or high power (for example, 130-140 h.p. or more). The tyre (100) for the motorcycle has a tread band (8) comprising the central annular portion (A) and two arm circumferential portions (B). The portion (A) has a width (M) not exceeding 65% of the band (8) width in the axial direction, and each arm circumferential portion (B) has a width (N) not exceeding 45% of the band (8) width in the axial direction. The band (8) comprises a plurality of grooves and slit-like drainage grooves made with the possibility to form the tread pattern. The portion (A) comprises at least two substantially longitudinal first grooves (18, 19) opposed to each other with respect to the plane (X-X) of the tyre. The first substantially longitudinal grooves (18, 19) extend substantially in the portion (A) and at least partially facing each other so as to limit a part of the tread band in the axial direction, at least partially; the void ratio defined by the slit-like drainage grooves of the portion (A) is less than the void ratio defined by the slit-like drainage grooves of the portion (B).

EFFECT: providing the possibility of using the tyre substantially all the year round; the tyre must be able to ensure good grip with the road at low temperature conditions as well, to have the high reliability on wet grounds and at the same time to provide the possibility of achieving the performance characteristics comparable to the performance of typical summer tyres in terms of responsiveness and drivability, steerability, and also in case of the sports driving style without compromising the security.

25 cl, 5 dwg