摘要:
A tyre for motorcycles, having a tread band includes a central annular portion, two lateral annular portions and two shoulder annular portions. The axial extension of these portions is not greater than 25%, 35%, and 20% of the axial development of the tread band, respectively. The tread band includes a module repeated along the circumference of the tyre in which at least two substantially longitudinal grooves, mainly extending in the lateral annular portions, include, moving axially away from the equatorial plane of the tyre, at least three substantially straight and substantially consecutive segments, wherein the first segment forms an angle with respect to the equatorial plane greater than 150°; and the second segment has a length measured along its extension smaller than the length of the first segment.
摘要:
A pneumatic tire suitable for competitive sports has a specified tread pattern comprising a central region and both shoulder regions, in which a plurality of bell-shaped wide-width main grooves each extended substantially bell-shapedly into both sides approximately centering on an equator of the tire are disposed in the tread at a given interval in the circumferential direction of the tire wherein the bell-shaped wide-width main groove has specified inclination angles in the central region and the shoulder region and specified groove width and groove depth, and a width of a connecting land portion at a position coming the bells-shaped wide-width main grooves closest to each other is not less than 1.5 mm, and the tire has a given negative ratio at the central region.
摘要:
In the method of mounting a pneumatic radial tire comprising a spiral belt and a pair cross belt members arranged in parallel to each other at both sides of an equational plane of the tire and at a given opening space onto a vehicle body, the tire is mounted as a front tire and/or a rear tire so as to contact a portion of the cord in the belt member facing the opening space with ground under a given condition in a forward rotating direction of the tire.
摘要:
A tire for a vehicle having at least one wheel at each corner, the tire comprising a non-longitudinal ground contacting tread extending axially between first and second axial edge regions and having tread grooves formed therein, wherein in the first axial edge region of the tread, the tread grooves are oriented substantially in the tire circumferential direction and in the second axial edge region of the tread the grooves are oriented substantially in the tire axial direction and in a third axial region of the tread axially between the first and second edge regions the orientation of the grooves changes progressively from circumferential to axial.
摘要:
The present invention is directed to A plurality of vehicle tires having tread patterns of substantially the same outer appearance, wherein the tread patterns comprise a primary tread pattern comprising blocks and/or ribs separated by broad cut-outs and a secondary tread pattern on the blocks and/or ribs of the primary tread pattern comprising fine cuts. At least one vehicle tire has fine cuts of low depth and at least one different tire has sections of the fine cuts that have a different depth of fine cuts. The at least one vehicle tire has different driving characteristic from the at least one different vehicle tire. The advantage of the vehicle tires of the present invention is that a performance characteristic of the tire can be chosen by altering the structure of specific sections of the tire, without varying the fundamental opial appearance of the tire.
摘要:
A pneumatic tire comprises: a tread portion provided with an asymmetric block pattern and having an inside tread edge and an outside tread edge to be placed on the inside and outside of a vehicle, respectively; outside lateral grooves extending from the outside tread edge to a tread center region, each having a groove center line X0 inclined towards one direction with respect to the tire circumferential direction at an angle null0 of from 40 to 60 degrees with respect to the tire circumferential direction; inside lateral grooves extending from the inside tread edge to the tread center region, each having a groove center line X5 inclined at an angle null5 of from 70 to 100 degrees with respect to the tire circumferential direction; each portion between the circumferentially adjacent outside lateral grooves being divided into outside blocks by first to fourth outside connecting grooves extending thereacross; the first outside connecting groove having a first groove center line X1 , the second outside connecting groove having a second groove center line X2, the third outside connecting groove having a third groove center line X3, the fourth outside connecting groove having a fourth groove center line X4, and the first to fourth groove center lines X1 to X4 inclined reversely to the groove center lines X0 of the outside lateral grooves with respect to the tire circumferential direction, and the inclination angles null1 to null4 of the first to fourth groove center lines X1 to X4 with respect to the tire circumferential direction being in a range of from 20 to 50 degrees and being different from each other.
摘要:
A vehicle tire having an outside tread part and an inside tread part to be placed on the outside and inside of a vehicle, respectively, the inside tread part provided with inside axial grooves to be circumferentially divided into inside blocks, the outside tread part provided with outside axial grooves and outside circumferential grooves to be circumferentially and axially divided into outside blocks, and the inclinations of the grooves when looking down the tire are as follows: the outside axial grooves are inclined toward one direction such that the outer ends thereof are positioned backward of the inner ends, and the inclination angle &agr; is in the range of from 60 to 80 degrees with respect to the tire equator C; the outside circumferential grooves are inclined toward one direction such that the outer ends thereof are positioned forward of the inner ends, and the inclination angel &ggr; is in the range of from 15 to 45 degrees with respect to the tire equator C; and the inside axial grooves are inclined at an angle &bgr; of 80 to 100 degrees with respect to the tire equator C.
摘要:
A tire tread band for medium/heavy duty motor-vehicles having circumferential grooves confining three pairs of respectively center, intermediate and shoulder ribs. Respective tread blocks are defined along the center and intermediate ribs and they are confined by transverse cuts. The center cuts impart a cusp-shaped end conformation and a hollow-shaped end conformation to the respective blocks, and the shapes of said end portions mutually match. The intermediate cuts run in the linear extension of the center cuts to give the respective blocks a rhomboidal configuration. The tire can be alternately associated with a driving axle or a driven axle, by merely reversing its direction of rotation, so that the following results are selectively achieved: an increase in the traction capability by the intermediate blocks or an increase in the directional capability as a result of the mutual wedging between the center blocks at the ground-contacting area.
摘要:
A motor vehicle having at least one profiled tread with transverse profiling with segments in the form of cleats, transverse ribs or the like. The profiled tread consists of two partial profiles which are adjustable relative to one another in the running direction, whereby the vehicle has high cross-country capability, as well as great smoothness of operation when traveling over flat surfaces.
摘要:
A method for fitting tires (P) to a driving axle of a vehicle carrying heavy loads, which consists, after having determined the type of journey made by said vehicle, in: when the route is of type A (ascending under load with a driving torque and descending empty with a braking torque), fitting to each driving axle tires such that for each transverse groove (31) in the edge portions (B) of the tread (1), the angle of inclination of the rubber faces (310, 311) delimiting the transverse grooves (31) which first come into ground contact is smaller than the angle of inclination of the rubber face opposite delimiting the same transverse groove, or when the route is of type V (ascending empty and descending under load with a braking torque), fitting to each driving axle tires such that for each transverse groove (31) in the edge portions (B) of the tread, the angle of inclination of the rubber face (310, 311) delimiting said transverse groove which first comes into ground contact is larger than the angle of inclination of the rubber face opposite delimiting the same transverse groove. A tire (P) appropriate for implementing the method described.