Wait a minute I tried to put those wheels on my 87 SDL, they came off of a 92 SL320. They were to wide and would rub, 8in wide (ET34?). Are you running spacers? Those wheels shouldn't fit.
DANGER! Don't run spacers with longer bolts they could shear off and you could lose a wheel!
You need to run proper hub centric spacers, H&R makes them about $300 for a car. The lug bolts don't support the wheel the center of the hub does.