Recently upgraded to steel wheels for winter. Using the OEM lug nuts with washers at the moment. Should I get specific lug nuts for the steel wheels? M12 1.5, but what length? I don’t want they to stick out, as I have cover caps for the bolts (a singles large cap per wheel, not per bolt).
Just get the basic ones that are steel with a threaded hole. They'll thread down the stud and any extra stud length will just extend from the outer face of the lug nut. Similar to this:
