A motorcycle tyre has a tread band including a central portion and two shoulder portions arranged at axially opposite sides of the central portion. The central portion includes a first plurality of grooves extended according to a substantially longitudinal direction and alternatively arranged at opposite sides of the equatorial plane of the tyre. Each groove of the first plurality of grooves has a substantially curvilinear course such as to form a concavity. The central portion further includes a sub-portion substantially free of grooves placed astride the equatorial plane of the tyre. Each of the shoulder portions includes a second plurality of grooves arranged obliquely relative to the equatorial plane of the tyre.

A motorcycle tyre has a tread band including a central portion and two shoulder portions arranged at axially opposite sides of the central portion. The central portion includes a first plurality of grooves extended according to a substantially longitudinal direction and alternatively arranged at opposite sides of the equatorial plane of the tyre. Each groove of the first plurality of grooves has a substantially curvilinear course such as to form a concavity. The central portion further includes a sub-portion substantially free of grooves placed astride the equatorial plane of the tyre. Each of the shoulder portions includes a second plurality of grooves arranged obliquely relative to the equatorial plane of the tyre.

A motorcycle tyre has a tread band including a central portion and two shoulder portions arranged at axially opposite sides of the central portion. The central portion includes a first plurality of grooves extended according to a substantially longitudinal direction and alternatively arranged at opposite sides of the equatorial plane of the tyre. Each groove of the first plurality of grooves has a substantially curvilinear course such as to form a concavity. The central portion further includes a sub-portion substantially free of grooves placed astride the equatorial plane of the tyre. Each of the shoulder portions includes a second plurality of grooves arranged obliquely relative to the equatorial plane of the tyre.

A motorcycle tyre has a tread band including a central portion and two shoulder portions arranged at axially opposite sides of the central portion. The central portion includes a first plurality of grooves extended according to a substantially longitudinal direction and alternatively arranged at opposite sides of the equatorial plane of the tyre. Each groove of the first plurality of grooves has a substantially curvilinear course such as to form a concavity. The central portion further includes a sub-portion substantially free of grooves placed astride the equatorial plane of the tyre. Each of the shoulder portions includes a second plurality of grooves arranged obliquely relative to the equatorial plane of the tyre.

A tire traction device can include a strap configured to extend around at least a portion of a vehicle tire; and a traction plate. The traction plate can have a lower surface adapted to sit on a circumferential portion of the vehicle tire, an upper surface opposite to the lower surface, a channel configured to receive the strap, and one or more paddles extending upward from the upper surface. Other features, embodiments, and kits, and related methods are also described.

The method includes the step of running a cutting means between two threads of the reinforcing ply. The method proceeds with the steps of measuring; a discrepancy between an actual cutting line (ABC) and a theoretical cutting line (ABC) is measured and determining a point of intersection of the actual cutting line (B) with a reference longitudinal line (XX) placed on the strip. The actual cutting line (BC) of that part of the rubber profiled elements that are not superposed with the reinforcing ply is longitudinally offset (Z) with respect to the theoretical cutting line (BC) so that the actual cutting line (BC) meets the reference longitudinal line (XX) at the point of intersection (B) of the reinforcing ply (AB) with the reference longitudinal line (XX). The rubber profiled elements that are not superposed with the reinforcing ply are cut along the said actual cutting line.

A method in accordance with the present invention retreads an air maintenance tire. The method comprises the steps of: grinding remaining tread material from a tire casing for a worn air-maintenance tire; temporarily securing a contoured piece around a structure secured to the inner surface of the tire casing; placing a tread on the tire casing; inflating a bladder within an internal cavity of the tire casing and around the contoured piece whereby the bladder does not contact the structure; securing the tread to the tire casing; deflating the bladder; separating the tire casing and tread secured to the tire casing from the bladder; and removing the contoured piece from the tire casing.

A motorcycle tyre has a tread band including a central portion and two shoulder portions arranged at axially opposite sides of the central portion. The central portion includes a first plurality of grooves extended according to a substantially longitudinal direction and alternatively arranged at opposite sides of the equatorial plane of the tyre. Each groove of the first plurality of grooves has a substantially curvilinear course such as to form a concavity. The central portion further includes a sub-portion substantially free of grooves placed astride the equatorial plane of the tyre. Each of the shoulder portions includes a second plurality of grooves arranged obliquely relative to the equatorial plane of the tyre.

A tire traction device can include a primary strap configured to extend around at least a portion of a vehicle tire; a traction plate having a channel configured to receive the primary strap, and one or more traction-enhancing surfaces extending from the channel; and a base member having a first surface adapted to sit on a circumferential portion of the vehicle tire, and a second surface opposite to the first surface, wherein the second surface defines a recess adapted to receive the channel of the traction plate. Other features and embodiments, and a method of attaching a tire traction device to a vehicle tire, are also described.

A non-pneumatic wheel with reinforcement bands that provide structural support for the wheel and a method of manufacture of such a wheel are described. The reinforcement band forms part of an annular reinforcement structure that includes a core that is cast in place between annular reinforcement bands. The core can be impregnated with a matrix material. The matrix material can also be used to form one or more elements of the non-pneumatic wheel.