How do I measure the offset of my Fuchs rims
 

2 part question all:

1) How do i measure offset of my Fuchs rims

2) Why do some SCs with 8" & 9" Fuchs rims on the rear sit better under the guards than other SCs

Thanks heaps

Joe

look in the inside of the rim, you will see a number like ET 15, cant remember, that is 15 mm offset.


could be tire size???

http://members.rennlist.com/1976c38/...AQ-diagram.gif
ET = backspace - (.5 x overall rim width)

If they're genuine Fuchs, they'll have the size and offset stamped in the back of the spokes. It'll look like this:

http://forums.pelicanparts.com/uploa...1262622440.jpg

That's a 16x7 wheel with an et23.2 (23.3mm offset).

AUS911SC,

Post the long numbers inside the Fuchs rims and we'll tell you what you have. :)

You'll find something like 911 ??? ??? ??

This chart of part numbers may help
 

Not sure where I found this, but here's a handy chart for figuring out what Fuchs wheel offsets are:

http://forums.pelicanparts.com/uploa...1262634557.jpg

Ride height and alignment make a big difference. Negative camber (wheels leaning in at the top) is good for performance and also happens to look great.

These are 9's at a little over 3 degrees negative camber.

http://forums.pelicanparts.com/uploa...1188012931.jpg

Todd, that looks great, what offset are your 9"?

They are ET15.

Hi, I'm buying 7 and 8" 16" genuine Fuchs rims for my SC. Should I check the ET just to be sure they will fit with no spacers or such? ET23 (7") and ET10.6 (8") is the only possibility for my car?

Would you also check them for straightness on the balancing machine?

Thanks a lot!

Cheers

yes to all of your ?'s
you want 7ET23.3 for the front, there are 2 16" Fuchs versions that will do, there is a 911 part # wheel and a 951 part # wheel that will work here. Both have the same basic stats 7x16ET23.3 but the 951 wheel has more room for brakes than the 911 wheel.

in back you want either the 911 part # 8x16ET10.6 wheel or the 911 part # 9x16ET15 wheel. But if you use a 951 part # ET23.3 8" wheel that will require spacers to bring the wheel more outboard.

w/ any used wheel always check for damage, the wheel could be bent or cracked or both

Thanks a lot Bill!

Todd, car looks great! What size tires do you have on it? Is it Gemini Blue?