Tons of different wheels will fit. I suggest keeping the offset between 30 and 11.
Edit: I meant Mercedes wheels. Really no other make has compatible wheels. The easiest to come by would probably be W126 15-hole wheels in 6.5x15 et21.5. 7x15 et25 might be a little more valuable being used on 560sl cars.
Edit: I meant Mercedes wheels. Really no other make has compatible wheels. The easiest to come by would probably be W126 15-hole wheels in 6.5x15 et21.5. 7x15 et25 might be a little more valuable being used on 560sl cars.