Audi S4 16 inch wheels fit fine. Audi has same bolt pattern as M-B, 5x112. However, hub opening on M-B is about 10mm larger diameter, so M-B wheels not hubcentric. As long as Audi wheel has right bolt pattern and offset, they should fit. I suspect A4 wheel, 16x7.5 should fit fine. E-mail me for more info.