Abstract: A two-piece tire assembly has a removable tread belt 12 for installing about the circumference of a tire carcass 14. The tread belt has a pair of lateral ends each axially extending beyond the inflated unloaded carcass 14 at the circumferential surface by a distance of at least 4% of the width as measured at the tread belt 12 and carcass 14 interface. The carcass 14 has an abrasion resistant rubber layer 82 at the tread belt interface. The tread belt 12 also has the abrasion resistance tread compound 82 at the carcass 14 interface.

Abstract: The present invention provides a studless tire which has superior performance on ice and snow in which adhesion friction, digging friction and scratching friction of the tire to the road and abrasion resistance are improved and can maintain this performance. The studless tire has a tread comprising diene rubber and non-metal short fiber which is surface-treated in advance and dispersed in said diene rubber so as to be oriented in the tread thickness direction, wherein when measured at 25° C.

Abstract: A metallic cord is composed of metallic filaments gathered together, the metallic filaments include at least one patterned filament which is, before gathered together, two-dimensionally waved so as to have a wave form defined by plural kinds of cycles different from each other in respect of the wave length and/or wave height. A pneumatic tire includes the metallic cords as its carcass cords.

Abstract: A two-piece tire assembly 10 has a removable tread belt 12 for installing about the circumference of a tire carcass 14. The tread belt 12 has a radially outer ground contracting tread 15 and a radially inner belt reinforcing structure 100 having ply layers forming tread belts 84, 86, 88, 92. Radially inward of the belt reinforcing structure 100 is a radially inner portion 70, the radially inner portion 70 has a radially inner surface 72 in contact with the outer circumferential surface of the carcass 14. In one embodiment of the invention the radially inner surface 72 of the tread belt 12 and outer circumferential surface 71 of the carcass 14 have circumferentially extending grooves 74, 78 and ribs 72, 76 that complimentarily interlock. Traversing the ribs 72, 76 of the carcass or the tread belt are fluid or gas venting subsurface passages 80, 82 that are open to one or more groove 74, 78. The venting subsurface passages 80, 82 provide a convective cooling system for the two-piece tire assembly 10.

Abstract: The present invention provides a tire with inclined elastic support blocks on its outer surface, wherein, a number of elastic convex blocks are uniformly arranged on and integrated with the outer circumference surface of the tire, which direct against the rotation direction of the tire, and in each convex block there is a branch of a ring arbor which inclination direction is in accordance with said convex block. By using this kind of tire, The braking distance of the vehicle equipped with said tire is shorter, the starting moment is less and the vehicle has a good comfortability.

Abstract: An anti-skid stud which comprises a plug or matrix in which are embedded one or more wire-like strands of great wear resistance material such as iron, steel, siliceous material, plastics, etc., which protrude from the matrix. The stud is installed in the surface of tires with the wire-like strands protruding to the road surface. These protrusions penetrate ice and snow surfaces to provide anti-skid traction, however on surfaces such as bare concrete these protrusions flex and do not penetrate the surface to cause excessive erosion of the concrete surface.