You can use a ruler to measure the distance between the wheel and the sub-board to determine how thick it is to fit it.
Recently I was considering installing wheel spacers on my car, I saw the BONOSS forged active cooling wheel spacers (formerly bloxsport) on the Internet, and some youtubers shared and installed these component. So I install that last week.
They have aluminum alloy 7075-T6 and 6061-T6 options. 7075-T6 will be more expensive but better in quality. In fact, 6065-T6 is good enough. Its tensile strength, yield strength and elongation can support our normal use. And its lugs are grade T10, studs are forged grade 12.9.
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