Attachment of wheels

We have a wealth of knowledge about wheels and tyres. We are happy to share it with you, such as about wheel discs and mounting options. Not an everyday subject, so we are happy to help explain some of the basics.

Wheel Disc

The disc of the wheel is the connection between rim and wheel hub. With the disc, you attach wheel with tyre to the vehicle. It can be on the hub plate (flange) or on the brake drum.
The shape of the disc is created by several things. Such as the shape of the rim, the axle attachment, the shape and type of the brake. But also by things like loading requirements and that the wheel must look good.

Wheel attachment

Mounting the wheel can be done in a few ways (depending on the vehicle). You need to take into account some things - especially sizes. These are given by the wheel manufacturer following the vehicle specifications. What to look for:

Hub hole diameter
Pitch circle diameter
Number of bolt holes
Bolt hole diameter
Type of bolt holes
Position of the wheel disc (ET value)

Offset or ET-value

The offset, ET value, is the distance from the center of the rim to the attachment of the wheel plate relative to the hub. The offset (ET value) can be positive or negative. Ultimately, then, the vehicle's track width is determined by the flange size / axle length and the offset of the rim.
The offset is positive if the attachment of rear side of the wheel plate relative to the center of the rim is more outward. The offset is negative if the rear of the wheel plate relative to the center of the rim is more inward.

In conclusion

It is also very important to mount the right tires on the right rims (recommended or permitted). Pay attention to the correct width and construction, for example, single-piece or multi-piece.

Like to know more?

Do you need advice? Please contact us, our experts will be pleased to assist you. Contact our experts at +31 (0)523 - 850 850 or by e-mail to info@heuver.com. You can also read all about agriculture on the agricultural knowledge-page.