Fuchs size on G body

[stl87]

My car came with the optional 6x16 front and 7x16 rear
Was curious as to anyone mounting 7x16 front and 8x16 rear with any handling,rubbing or any other problems?

Thanks for any replies

[wildthing]

Nope. No issues. Those were an option, I believe.

[Bruce911_]

I have 7 and 9’s on mine. No rubbing.

[MARISOL78sc]

7 & 9 turbo fitment on my SC. Drivers side fender needed rolled. Some do, some don't.

[darrin]

you should presume that the front tires will rub the inner front fender lips with 7" Fuchs up front and be prepared to roll the inner fender lips to address (going with shorter 205/50-16 front tires can help). If your's don't rub, consider yourself lucky. My passenger side rubbed when I switched on my '86 targa. Rears a-ok with 8" Fuchs

[dg567]

205/55-16 Front on a 7 and 245/45-16 Rear on a 9 - stock body Carrera - no rubbing anywhere.

[Bill Verburg]

Originally Posted by stl87

My car came with the optional 6x16 front and 7x16 rear
Was curious as to anyone mounting 7x16 front and 8x16 rear with any handling,rubbing or any other problems?

Thanks for any replies

There are 2 distinctly different sets of 7 & 8" Fuchs
set 1
911 part #s w/ 7ET23.3 and 8ET10.6

set2 944 part #s 7ET23.3 w/ bigger brake clearance, 8ET23.3

the 7s of either fit front or rear on an SC/Carrera body, but only the 911 8 fits well and only in back

tires, suspension spec and ride height determine fit

in back no problem w/ up to a 255/40 x17 tire, though usually 225/50 x16 or 245/45x16 are used, the former on 8ET10.6 the latter on 9ET15

for better handling and performance 225/45 x16 is a good choice on the 8ET10.6

in front the only potential issues are w/ 7ET23.3 and 205/55 x16 tires, at the lips, a little extra neg camber and/or shaving of the lips will solve that issue, using a shorter 205/50 x16 is also a good solution.

keep in mind that you want to match f/r
7 ET23.3 w/ 205/55 is a good match for 225/50 on 8ET10.6
7ET23.3 w/ 205/50 x16 is a good match for 8ET10.6 w/ 225/45 x16

many use 7 ET23.3 w/ 205/55 or /50 matches to 9ET15 w/ 245/45 x16, this works ok but a 215 or 225 is a preferred match except for the additional fitment issues they would impart.

[bmcfarland]

^^^ Similar circumstances for me - 205/55 16 Pirelli P7s on 7-inch Fuchs in front. 245/45 16 P7s on 8-inch Fuchs on rear. Euro height. No rubbing or fender lip modifications.

[Bill Verburg]

Originally Posted by bmcfarland

^^^ Similar circumstances for me - 205/55 16 Pirelli P7s on 7-inch Fuchs in front. 245/45 16 P7s on 8-inch Fuchs on rear. Euro height. No rubbing or fender lip modifications.

no issues because of ride height

the same combo on a lowered car w/ stockish suspension and alignment would have issues in front

[mark4ton]

First imagine is 16x7/9 and the second image is 17x8/9.5 fenders rolled to the max on the front. it rubbed on hard turns during spirited drives before rolling the fenders.

[Bill Verburg]

sure you can go bigger and get better performance w/ after market wheels w/ custom widths and ET's but no w/ Fuchs

I've seen up to 245/ 275 on SC/Carrera and run up to 235/275

but the sweet spot w/ least restrictions on setup w/ custom setups is 17, 215/45 on 7 to 8 and 245/40 on 8 to 9 for lower power cars and 225/4 on 8 and 255/40 on 9.5 for cars w/ more robust torque curves
mine 3.6 w/ cams, chip, headers on 8 225/45 and 9.5 255/40 x17


w/ 16" fuchs it's 7 205/50 and 8 w/ 225/45 w/ 7 205/50 and 9 245/45 a close second

[stl87]

Great info!
Thanks for helping me narrow it down.
The tire size info is really key

[bmcfarland]

Looks like you have what you asked for. To provide dimensional reference and to confirm Bill’s accurate and appropriate statements specific to ride height, one last thought from me:

I used Bruce Anderson’s guidance to set my car at “Euro Spec”. In his book, Bruce states:

“What most people consider to be “Euro Spec” is actually lower than the true European specification. The correct ride height will result in a measurement of about 25 inches when measured from the ground to the rear fender lip. The 911 should have a slight nose-down attitude (approximately 1 degree slope), which will result in a measurement about 1/2 inch higher at the front fender lip (about 25 1/2 inches) than at the rear.”

With the wheel-tire configuration mentioned previously, setting the ride height per Bruce’s guidance, and alignment per Porsche spec; I have not experienced any interference.

[darrin]

sti87 -- one thing that hasn't been mentioned regarding tire rub on front fenders is that (IMO), it's best to proactively roll the inner front fender lips. Otherwise, if you do have interference between your front tires' sidewalls and the inner front fender lips, the tire's sidewall can pull the fender lip down and cause potential paint cracking/etc. issues on the front fender when you work to straighten the lip back out.