How are cast alloy wheels made?

How cast alloy wheels are made is clear even from their name - they are cast into a ready-made mould. Aluminium-based alloys are used to make cast wheels (which is exactly why they are called aluminium wheels in Europe), or, much more rarely, magnesium-based alloys.

It has to be said that the properties of the finished wheel, including its reliability, impact resistance and strength, depend heavily on a great many factors, from the quality of the alloy and the casting mould right through to the quality of the final machining and paintwork. So you should absolutely not rush into buying the cheapest cast wheels you can find - their quality may well leave a lot to be desired.

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