In order to be able to assemble or combine rims with vehicle-deviating hole circles and center-centering diameters on the car, so-called bolted circle adapters are necessary. With the help of bolt circle adapters you can, for example, mount Porsche rims on vehicles from Volkswagen, Mercedes-Benz or other brands. Bolt circle adapters consist of relatively lightweight aluminum alloys, which are high-strength. As a result, you can withstand the daily stress of a vehicle or the wheels of a car. By means of modern CNC milling, the light alloy spacer ring adapters are manufactured with a very high precision. In addition, the adapter plates are provided with anodised coating to protect against corrosion and environmental pollution. There is a huge choice of pitch circle adapters with different centering diameters and pitch circles, so there is a solution for many vehicles. Tip: New rims for the car? It is important to pay attention to this before buying!
Special order possible on request
Some manufacturers of bolted circle adapters also offer custom-made products on request. If, for example, you want to install rims from a current BMW G20 on an old VW Golf 1, it should be clear that such a thing is not in stock because the demand is extremely low. If you order a special order you should count on a delivery time of three weeks. Of course, the waiting time can vary. Just write down the manufacturer with the necessary data for the rims and your vehicle. You will also receive the Bolt Circle Adapters and / or the Centering Adapters in different thicknesses. As a result, almost any wheel-tire combination can be realized. Incidentally, the Bolt Circle Adapter always functions as Spacers, This is due to the design. For each hole circle adapter, a material or fatigue strength report should be included. With these documents, a special approval according to §21 StVZO is possible at one of the respective test centers.
Common hole circle adapters are in stock
The following bolt circle adapters are usually available from most suppliers without long waiting times: from 4 × 100 to 5 × 100, from 4 × 100 to 5 × 112, from 4 × 100 to 5 × 120, from 4 × 100 to 5 × 130 , from 5 × 100 to 5 × 112, from 5 × 100 to 5 × 120, from 5 × 100 to 5 × 130, from 5 × 112 to 5 × 100, from 5 × 112 to 5 × 114, from 5 × 112 to 5 × 120, from 5 × 112 to 5 × 130 and from 5 × 120 to 5 × 130. Each bolt circle adapter is also available in different thicknesses such as 15 mm per bolt circle adapter and thus 30 mm per axis or 20 mm per bolt circle adapter and thus 40 mm per axis etc. A thickness of 25 mm per bolt circle adapter and thus 50 mm per axis is also very common.
Safety as well as wheel spacers
For bolt circle adapters and rims, it is more appropriate to choose a rim where the number of holes is equal to or greater than the number of fasteners on the vehicle side. If the number of holes is smaller, there is a security risk. In this case, the power from the engine has to be transmitted to the road via a rim with a smaller number of screws. This safety risk is further increased if the bolt circle of the rim is smaller than the bolt circle existing on the vehicle. However, every combination requires a single and careful consideration of the vehicle and its application.
in the video: BMW E39 5er with other rims
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