8 & 9 inch wheels for SC

[jwetering]

I couldn't help myself...an offer came along that I felt too good to pass up.

On the rear, 9 inch wide fuchs from a late model 911 turbo. On the front, 8 inch wide fuchs from the rear of a 951.

Bruce Anderson says they're the biggest whells that will fit under a (moderately) lowered SC. The attached photo bears this out.

The 951 wheel are a 15 mm offset, copared to the 23.3 mm offset of the "regular" 8 inch fuchs from the 1989 3.2 Carrera.



(apologies for the low quality pix guys)

[Doug Zielke]

Very meaty, Jasper!
The Blue Bomber is envious.
Any rubbing?

BTW, Call me at home in the evenings re: the engine drop clinic trip.

[Glasgow 911SC]

Nice and chunky! Infinately better than my cookie cutters!

[makaio]

Nice!

Are your H4's rings the black ones that you paint? Because they look pretty good with all the black trim.

[scruffy1]

Hate to be a spoilsport here but, the rear 9x16s are 15mm offset and the front 7 or 8 x16s(impossible to verify from the pics) are 23mm offset. If you take the time to remove and inspect the backs of the paddles you can verify this for yourself.

[jwetering]

I stand corrected...the 8 inch fronts are indeed 23.3 mm offset - part # 951-362-117-00. The 9 inch rears are 15 mm offset, part # 911-362-119-00. I was working from memory last night and as you can see from the time, that isn't my "zone".

Matt - those black rings are actually part of the headlight itself, if you have painted rims, you could remove them to reveal the black rims underneath (they may also be chromed). Of course, your black rims could have been painted too...

Doug - there's no rubbing at all. There's a point during the wheel's travel that the edge comes close to the point where the bumper valence meets the fender, but even a brisk romp couldn't make it actually touch. YOu can check these out in the fleash soon eh wot?

[Steve W]

Nice looking - tight. Actually the largest wheel you can fit in a SC lowered to Euro specs is 18x8 front and 18x9.5 rear. But Bruce was close. Check out the thread at:

http://www.pelicanparts.com/cgi-bin/vb/showthread.php?s=&threadid=55075

[stuttgart]

Did you have to do any type of rolling to get the 9.5's up in the fender well? I have a 78SC that has been lowered quite a bit and I have ground the lip almost totally off to allow for clearance.. I love the sound of 9.5" in the rear and 8" up front...I was simply looking to go with 9's and 7's but this sound's much better!!

Eric Mckenna
78 SC
Dayton , Ohio

[stuttgart]

HAHA, Sorry if I confused anyone, my post was to a post in the thread that was in the post above.

[fastbydrmike]

I just ordered 9" and 7.5" 17" BBS rims for my 83 911 SC. I am excited about the new look of the old girl. I will post some pics once they are mounted.

[Steve W]

Actually, I had to roll the rear fenders, though there is not much lip on the rears to roll, but I needed all I could get. It is tight, and I like the look. Do you realize that the 225-40/18 fronts and the 265-35/18s are the exact same tires that came with the widebody 911 turbos in 1994? It clears the rear trailing arm bolts by about 3 or 4 mm and the fenders on each side by a millimeter or two. BTW, camber settings are critical to clearance. I think I set my rears to -1/2 degrees, which works out perfect as my rears have worn out evenly over time. I believe it's what Bruce Anderson recommended when using such wide tires.

[stuttgart]

Steve,
Do you by chance happen to know if the ofset would be the same for our car's I have a 78 SC. If not doe's anyone happen to know what it would be to fit some rubber like this under my gal.
Thanks in advance,
Eric Mckenna
78 SC
SCWDP

[Steve W]

Stuttgart,

I believe the offsets are the same between a SC and a Carrera, though I'm not 100% sure - don't see why they would be different. In Bruce Anderson's book, there is no indication of any differences in rim/tire recommendations between the two. But perhaps someone else has more experience.

Steve

[Bill Verburg]

All 911s from the 60s thru the '89 Carrera 3.2 used the same standard offsets

• 15x6 or 16x6 +36mm
• 15x7 or 16x7 +23.3mm
• 15x8 or 16x8 +10.6mm
• 15x9 or 16x9 +15mm

In addition there is a 944 8x16 with +23.3 mm os which will fit the front of a narrow body 911 and yes, there is a +49 mm 15x7 for the rear of non flared cars but it is so rare we can ignore it.

Aftermarket 3 piece wheels with special os can be purchased. Most of the racers will use either Kinesis or Fikse 17x8 front and 17x9 or 9.5 or 10 rear(I used Kinesis 17x8 and 17x9.5) Tires for these wheels are 225/45 thru 245/40 front and 255/40 thru 275/40 rear. I am currently using 235/45 front 275/40 rear.

Generally the custom os wheels are 1-2 mm above oem at the front and 0-6mm extra at the back depending on the desired width(the wider the wheel and tire the more os is desired at the rear). The limiting factors at the rear are the fender lip, the oil lines and the trailing arm bolts. For 255 tires on +15mm 9s these are non issues, for 275 tires on 9.5 or larger rims all will need mods.

Be aware of the fact that larger diameter tires will sap the apparant hp of the car ie it will not accelerate as well from a standstill. The purpose of the wider and taller tires is for track use where the extra rubber is reallly handy for reduced lap times. Oversteer is fun but in excess it is also slow.

[Kahuna]

fastbydrmike, did you get the LMs? I think they and the Kinesis on Bill Vs car or the Fikses are the nicest looking. not to many BBS LM pics around

[Bill Verburg]

Here are the weights of the Fuchs I've had in my garage, every # has been verified repeatedly by others;

• 6 x 16" 911 fuchs 17#
• 7 x 16" 911/951 fuchs 18 #
• 8 x 16" 911/951 fuchs 19#
• 9 x 16" 911 fuchs 20 #

The bigger tires are correspondinly heavier but not prohibitively so, the cost/benefit is a net +

[jwetering]

thanks guys...I'm a real weight fanatic so that's good info. You should see the wheel crests on these things..they're actually little enamel emblems!

[fastbydrmike]

Hey Kahuna, I will get the LM's on monday. Due to the holidays delivery is off a few days. I will post some pics once they are mounted. Now after reading all the post of unsprung weight and horsepower zapping, I hope I am doing the right thing.

Thanks for your help

Mike

[Bill Verburg]

Mike, You probably are doing the right thing. I don't have the weights of the LMs alone or with tires(hopefully you can post those #s for the archives?) but I do have #s for Kinesis K5,

• 8x17 18#alone 42#w/SP9000 235/45
• 9.5x17 19# alone 49# w/SP9000 275/40

In each case the hp cost of the additional weight over 8&9x16 Fuchs with 225/50 & 245/45 RE71s(all in the tires) is ~.5 bhp. I would not suggest such large tires unless you have increased the speed potential of your car. The increased diameter of the rear tires will affect acceleration significantly. This is great on the track because of the increased size of the cars friction circle but generally less desireable on the street where stoplight Gran Prix is more common.