An aerodynamic bicycle rim comprising: a circumferential outer portion comprising a circumferential outer surface, the circumferential outer portion adapted to seat a bicycle tire; a nose; and a set of sidewalls, each sidewall extending radially from the nose of the aerodynamic bicycle rim to a corresponding transition to the circumferential outer surface to form a rim body having a maximum rim body width that is greater than a maximum width of the bicycle tire. The aerodynamic bicycle rim is operable to seat the bicycle tire so that the aerodynamic bicycle rim and the bicycle tire form an asymmetrical cross-sectional shape.

An arrangement has a wheel and a sheet-shaped cover element. The wheel has a rim, a hub and a plurality of spokes, wherein the wheel has a free space between at least every two spokes spaced apart in the circumferential direction. The free space being at least partly covered by the cover element and, on its inner edge, having a slight step on an outer side of the rim, which step extends at least in some portions along the edge. The cover element and the rim are formed and arranged relative to one another in such a way that a gap resulting in the region of the step from the arrangement of the cover element relative to the rim, following entry of a flow into the gap until exit from the gap, causes an at least two-fold deflection of the flow passing through the gap from the vehicle interior to the vehicle exterior or from the vehicle exterior to the vehicle interior.

A method for producing a one-piece cast vehicle wheel, the wheel having at least one hub portion connected to a wheel rim via at least one spoke oriented in the radial direction of the wheel, in which at least one lost core is inserted in a molding of the casting machine, the one-piece vehicle wheel is cast, and the lost core is removed from the cast vehicle wheel and thereby forms at least one opening in the spoke. A one-piece cast vehicle wheel formed by the method is also provided.

A spoked bicycle wheel having a rim at least partially comprised of a composite material. The rim has at least one spoke attachment chamber with a plurality of spoke attachment holes. The wheel has a plurality of spokes coupled with the rim and a spoke attachment element partially inserted in a respective spoke attachment hole. The wheel includes a holding element that prevents the movement of said spoke attachment element along a radially outer direction. The spoke attachment element has a holding surface configured for abutment against the holding element.

Apparatuses, systems, and methods are provided for improving fuel efficiency of a vehicle using a mountable wheel cap coupleable to a wheel. The mountable wheel cap includes a center section and an outer section. The outer section includes a plurality of tabs extending outwardly from the center section, and at least one gripper section coupled to at least one of the plurality of tabs, the at least one gripper section including a gripper configured to be placed in contact with the at least one of the outer section and/or the outer lip to secure the mountable wheel cap to the wheel.

A bicycle disc wheel includes two discs respectively formed of two composite material layers with a foam material bonded between the two composite material layers, a wheel frame arranged between the two discs in a concentric manner; and a spoke frame composed of a plurality of I-shaped ribs and sandwiched between the two discs. Each I-shaped rib is composed of a foam material and a composite material cladded on the foam material. Each I-shaped rib has a relatively wider opposite upper and lower sides and a relatively narrower middle section when it is viewed from the cross section, and the relatively wider opposite upper and lower sides of each I-shaped rib are respectively attached to the respective inner side of the two discs.

Apparatuses, systems, and methods are provided for improving fuel efficiency of a vehicle using a mountable wheel cap coupleable to a wheel. The mountable wheel cap includes a center section and an outer section. The outer section includes a plurality of tabs extending outwardly from the center section, and at least one gripper section coupled to at least one of the plurality of tabs, the at least one gripper section including a gripper configured to be placed in contact with the at least one of the outer section and/or the outer lip to secure the mountable wheel cap to the wheel.

Implementations disclosed and claimed herein provide a wheel cover system. In one implementation, an inward force exerted against a wheel cover of the wheel cover assembly in an inward direction towards the hub is received. The inward force overcomes a spring bias of a spring of the receiver and translates the wheel cover assembly in the inward direction. A first rotational force rotating the wheel cover assembly in a first direction is received. The first post guides and engages the first hook, and the second post guides and engages the second hook during rotation. A first positive feedback is generated in response to the inward force and the first rotational force. The wheel cover assembly is releasably locked to the receiver by translating the wheel cover assembly in the outward direction using an outward force generated by the spring bias. The outward force provides a second positive feedback.

An aerodynamic disk-shaped wheel cover (1) having a central aperture (3) and at least two pair of attachment slots (6) about a periphery of said cover. A method of attaching the cover to a wheel is provided by ties (7) through the slots is provided. The wheel cover is size adjustable to fit varying sizes of wheels by providing a slit (4) extending from a periphery of the central aperture to a circumference (9) of the cover.

A rim portion of a vehicle wheel has an outer flange portion. In a region of the outer flange portion, a space portion between spoke portions is disposed on a radial-direction inner side, a first inclined surface and a second inclined surface are provided. The first inclined surface is provided on an axial-direction outer side of an outer flange outer circumferential portion. The second inclined surface is on an axial-direction outer side of an outer flange inner circumferential portion. The first inclined surface is formed to incline from the axial-direction outer side toward an axial-direction inner side as the first inclined surface extends from a radial-direction outer side end toward the radial-direction inner side. The second inclined surface is a surface formed to incline from the axial-direction inner side toward the axial-direction outer side as the second inclined surface extends from the radial-direction outer side toward the radial-direction inner side.