The invention provides a pneumatic radial tire capable of promoting a wetland grip performance. The pneumatic radial tire capable of promoting the wetland grip performance comprises a tire body layer and a tire bead portion, the tire body layer winds a tire bead core in the tire bead portion and wraps the tire bead core from inside to outside in an inverse mode, the tire body layer is composed of one or more main body portions and one or more inverse wrapping portions, bead filler is arranged between the main body portions and the inverse wrapping portions, a rim cushion is arranged on the tire axial outer side of each inverse wrapping portion, and one or more tire sidewall strengthening layers are arranged on the positions from 40%-44% of the tire section height to 4.5-8% of the tire section height along each inverse wrapping portion between the tire axial outer side of the inverse wrapping portion of the tire body layer and the tire axial inner side of the corresponding rim cushion. According to the pneumatic radial tire capable of promoting the wetland grip performance, formulas and patterns are not changed, on the basis that excellent handling performance is guaranteed, a change of tire torsional rigidity is achieved through the additional arrangement of the tire sidewall strengthening layers on the tire sidewall positions and limit of the distribution ranges of the sidewall strengthening layers, and therefore the wetland grip performance of the tire is promoted.
Pneumatic radial tire capable of promoting wetland grip performance
2015-10-21
Patent
Electronic Resource
English
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
Pneumatic radial tire with low rolling resistance and high wet grip
European Patent Office | 2025
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