Centering rings

You need two measurements: the outer diameter, which is the hub bore of your rim, and the inner diameter, which is the hub diameter of your vehicle. The ring is always specified in this order, for example, 72.6 - 57.1. The hub bore can be found in the rim's part certificate, and the rim configurator will also tell you your vehicle's hub diameter.

A ring is required if the hub bore of the rim is larger than the wheel hub of the vehicle. This is usually the case with accessory rims because one rim is built for many vehicles. If the bore already exactly matches your hub, you do not need a ring. The information in the parts certificate or in the ABE (General Operating Permit) of the rim is binding in any case.

The centering ring is measured at the wheel hub, i.e., the round shoulder on which the rim rests. A caliper provides the most accurate value. The diameter is vehicle-specific and does not change when you mount different rims.

One per wheel, so four for a car. All items in this collection are therefore listed as a set of 4.

Do not order by approximation. A ring that is too large will not center, and one that is too small will not fit on the hub. Send us the hub bore and vehicle hub, and we will check if the size can be obtained.

Both materials fulfill the same task, centering. Plastic rings are corrosion-free and easier to remove later, while aluminum rings are more temperature-resistant. The differences are described in detail in the guide Materials Compared.

The ring is inserted into the hub bore of the rim before the wheel is mounted, not placed onto the vehicle hub. The installation guide describes the process.

No. The load is transmitted via the wheel bolts or wheel studs and their conical or spherical seat. The centering ring ensures that the wheel is exactly centered when tightened, thus preventing vibrations. What happens without a ring is explained in the article Driving without centering rings.