Amongst all the alloy rims there exists a handful of them having some amount of magnesium which makes them more ideal in their mode of operation. https://git.citpb.ru/altarosensteng/3437621/wiki/%E0%B8%AD%E0%B8%A2%E0%B9%88%E0%B8%B2%E0%B8%9E%E0%B8%A5%E0%B8%B2%E0%B8%94%E0%B9%82%E0%B8%9B%E0%B8%A3%E0%B9%82%E0%B8%A1%E0%B8%8A%E0%B8%B1%E0%B9%88%E0%B8%99%E0%B8%9A%E0%B8%B2%E0%B8%84%E0%B8%B2%E0%B8%A3%E0%B9%88%E0%B8%B2%E0%B8%A5%E0%B9%88%E0%B8%B2%E0%B8%AA%E0%B8%B8%E0%B8%94