center cap sizes

[darkhorrus]

So I wanted to get some bbs center caps for my style 42 rims and I couldnt find the size of the center cap... what size do I need?

[svginferno]

The BMW centercap is 2.75" wide, but BBS doesn't make a centercap that is specifically that size. They make 56 or 70mm caps. 2.75 is about 69.85mm which is close, so the 70mm caps might fit, no guarantee.