My rears were a bit ragged when I bought the car so I slapped on the 58s for a day on one occasion and they worked fine. I suspect any 18" X5 wheel works as I have seen quite a few 4.8s in Germany run different styles in 18" for the winter time, (winter tires are near obligatory in S. Germany).

This weekend I will replace my 315s and clean up the 20s so I will be trying the M3 18s on the 4.8 for the day.

If the sale of my 58s this weekend falls through I might have them back up for sale.