[tdw28210]

Originally Posted by Bill Verburg

there are 2 fundamentally different versions of both 7 & 8 x16 Fuchs

for 7 it's a relatively minor difference between the 911 7 ET23.3 and the 951 7ET23.3, the 951 wheel has more caliper clearance.

for 8 it's a more significant difference. The 911 8x16 has ET 10.6, the 951 8x16 has ET23.3, this means that the 911 8x16 wheel projects 12.7mm more out board than the 951 8x16.

You can see the difference w/o pulling the wheels and reading the backs, the 951 8 has recessed lug nut holes, the 911 wheel has the more usual projecting lugs.

No regular production street 911 ever used spacers w/ stock Fuchs from the factory(exception the 911R, used spacers in back but that wasn't a normal street car), 930 did and some owners have installed spacers to get the wheels closer to the lips w/o purchasing new wider wheels w/ correct ET.

Bill, you were one of the experts I was hoping would chime in here. Thanks.
Q: Didn't the M491's come from the factory with stock Fuchs and spacers? pretty sure my '85 did.