The utility model discloses a wheel nut, including a nut body which the outside surface comprises of multiple identical arc surfaces. The arc surface is protruding outward, and the radius of the arc surface is larger than the circumscribed radius of the outside surface of the nut body. The utility model designs the existing square surface of the outer hexagon feature of the wheel nut as an arc surface, which the contact area between the wheel nut and the sleeve and the loading area of the wheel nut can be increased, and then the deformation and looseness of the wheel nut can be avoided effectively, and therefore the service life of the wheel nut can be improved.

An adaptive rim has a disk wheel center and a central wheel flange, which are arranged concentrically to one another and are connected to one another. Between the disk wheel center and the wheel flange a detachable connection is formed, wherein the disk wheel center and the wheel flange can be separated from one another after the connection is released. Thus, the wheel flange in the case that it is incompatible with a wheel suspension, can easily be exchanged for another compatible wheel flange. Accordingly, a rim system has at least one rim and a first wheel flange detachably connected to said disk wheel center, and at least one second wheel flange, in which, after the disk wheel center and the first wheel flange have been separated from one another, the second wheel flange instead of the first wheel flange can be detachably connected to the disk wheel center.

A modular chassis is provided for an off-road vehicle to improve assembly, servicing, and repairing of a drivetrain of the off-road vehicle. The modular chassis includes a chassis to support components of the off-road vehicle. A front frame module couples with a front of the chassis, and a rear frame module couples with a rear of the chassis. The front frame module supports lower suspension arms of the off-road vehicle by way of inboard bushing joints. The front frame module supports at least a steering gear and a front differential of the off-road vehicle. The rear frame module is a tube-frame structure that supports components of the off-road vehicle. A lower portion of the rear frame module extends rearward and acutely upward to a top frame member that couples with upper side portions of the chassis. Several cross-members impart structural integrity to the rear frame module.

A modular chassis is provided for an off-road vehicle to improve assembly, servicing, and repairing of a drivetrain of the off-road vehicle. The modular chassis includes a chassis to support components of the off-road vehicle. A front frame module couples with a front of the chassis, and a rear frame module couples with a rear of the chassis. The front frame module supports lower suspension arms of the off-road vehicle by way of inboard bushing joints. The front frame module supports at least a steering gear and a front differential of the off-road vehicle. The rear frame module is a tube-frame structure that supports components of the off-road vehicle. A lower portion of the rear frame module extends rearward and acutely upward to a top frame member that couples with upper side portions of the chassis. Several cross-members impart structural integrity to the rear frame module.

Implementations disclosed and claimed herein provide systems and methods for identifying and mitigating lug nut loosening. In one implementation, an indicator body of an indicator has a top surface connecting a front surface and a back surface. A first side of the indicator body is disposed opposite a second side of the indicator body. A receiver extends from the top surface into an interior of the indicator body. The receiver is configured to form a translational relationship of the lug nut with the indicator through a mating fit of the lug nut within the receiver. The translational relationship generates a corresponding rotation of the indicator body in response to a rotation of the lug nut. The corresponding rotation of the indicator body provides an indication that the lug nut is loose.

A socket spanner insert releases or fastens wheel bolts which in the mounted state rest inside wheel bolt holes of a car rim. The socket spanner insert includes a base body which has a screw head receptacle and a tool receptacle, and a sleeve which encompasses the base body at least in portions and is rotatably connected to the base body. In order to prevent damage to the rims when mounting and removing wheel bolts, a retaining element is provided which, during release or fastening of the wheel bolt, blocks a relative rotational movement of the sleeve with respect to the car rim and allows a rotation of the base body within the sleeve.

A wheel fastener alarm assembly is provided having a fastener body with a first portion defining a wrenching surface and a cavity, and a second portion with a threaded portion to attach and detach from a wheel of a vehicle. A sensor array is disposed in the cavity of fastener body to detect an attribute of the fastener body and generate an output signal based on the attribute of the fastener body. An antenna connected to the sensor array to transmit the signal to a remote location. A cap is secured to the first portion of the fastener body and covers the wrenching surface and the cavity opening to define a capped fastener body.

A wheel fastener alarm assembly is provided having a fastener body with a first portion defining a wrenching surface and a cavity, and a second portion with a threaded portion to attach and detach from a wheel of a vehicle. A sensor array is disposed in the cavity of fastener body to detect an attribute of the fastener body and generate an output signal based on the attribute of the fastener body. An antenna connected to the sensor array to transmit the signal to a remote location. A cap is secured to the first portion of the fastener body and covers the wrenching surface and the cavity opening to define a capped fastener body.

A wheel spacer disk for motor vehicles including a center opening, a plurality of wheel bolt openings and at least two wheel hub centering elements for centering the wheel spacer disk relative to a wheel hub.

A diameter of the center opening is greater than a diameter of a centering element of the wheel hub, and at least two rim centering pins are provided for centering the wheel spacer disk relative to a rim.

The at least two wheel hub centering elements are arranged on a circumferential wall of the center opening, and the at least two wheel hub centering elements project at least in sections into the center opening of the wheel spacer disk.

A wheel spacer disk for motor vehicles including a center opening, a plurality of wheel bolt openings and at least two wheel hub centering elements for centering the wheel spacer disk relative to a wheel hub.

A diameter of the center opening is greater than a diameter of a centering element of the wheel hub, and at least two rim centering pins are provided for centering the wheel spacer disk relative to a rim.

The at least two wheel hub centering elements are arranged on a circumferential wall of the center opening, and the at least two wheel hub centering elements project at least in sections into the center opening of the wheel spacer disk.