Anyone in Chicago with 16x7s on the front that I could use to check for fitment on?

[Otter74]

Originally Posted by Glenfield

Otter, I’m in Chicago and run 7s up front on Yoko A052s (I think). I ended up having to roll the inner fenders as I bottomed out a couple of times. Probably a hair too tight.

You’re more than welcome to come check them and think we’ve exchange deets in the past.

Yes, we have, and thank you. I’ve had two offers both in the north suburbs and hope to find out how the fit is after the show on Sunday morning. I’ll let you know if I want to try yours. I appreciate all the help.

[Otter74]

I’d like to thank those that offered help. I went by @HLcass’s house today, swapped on the front wheels from his car and went for a drive. No clearance issues at all. I appreciate it!

[Bill Verburg]

Originally Posted by Otter74

I’d like to thank those that offered help. I went by @HLcass’s house today, swapped on the front wheels from his car and went for a drive. No clearance issues at all. I appreciate it!

good to hear

but the extra inch is all on the front side

[Bill Verburg]

Originally Posted by darrin

PeteKz and Otter74 -- interesting! Still trying to figure out why the outer (not inner) edge of my right front tire shredded on (and pulled out) my right front fender lip when I switched from 16x6 fronts to 16x7 fronts (without otherwise changing alignment/etc.). Rolling my front fender lips resolved this for me.

It's because the extra inch in all on the outside

[Bill Verburg]

Originally Posted by GG Allin

I'm in Des Plaines and coincidentally I have an 87 with 16's on it in my garage. It's not my car. This particular car rides very low and there is lot of evidence of inner wheel well rubbing. One of the things that's being done to the car is raising the ride height. I might be able to accommodate you.

only time ever see w=ear on the inner chassis wall is when 8ET30 is installed w/ 245 tires

I have 8ET25 on mine and have used 225 and 235 tires, The car is very low. top of the fenders is the same height as my 993 which is at 993RSR height(704mm to the top of the fender) no rub on the inside.

[Otter74]

Originally Posted by Bill Verburg

only time ever see w=ear on the inner chassis wall is when 8ET30 is installed w/ 245 tires

I have 8ET25 on mine and have used 225 and 235 tires, The car is very low. top of the fenders is the same height as my 993 which is at 993RSR height(704mm to the top of the fender) no rub on the inside.

I spoke to @GG Allin today and he showed me photos of the car in question and I suspect that the front wheels on that car are 944 7’s.

Originally Posted by Bill Verburg

It's because the extra inch in all on the outside

Still, when I put ET 23.3 7s from a Turbo on mine, it was fine despite the lowering. The wheels I’m considering are replaicas but same offset.

[Bill Verburg]

Originally Posted by Otter74

I spoke to @GG Allin today and he showed me photos of the car in question and I suspect that the front wheels on that car are 944 7’s.



Still, when I put ET 23.3 7s from a Turbo on mine, it was fine despite the lowering. The wheels I’m considering are replaicas but same offset.

all 7" Fuchs whether 911 or 944 have the same o/s or ET, 23.3mm
all have the same lip width
doesn't matter if they are 15 or 16, 911 or 944 part #s

the only difference w/ the 944 versions is increased brake caliper clearance and countersunk lugs on the 944 versions

Replicas may or may not have the same 23.3mm ET and probably don't have the narrow lip spec that all Fuchs have. All Fuchs have ~.35" lips almost all modern wheel have .5"

The most different versions of Fuchs can be seen in the 6's and a very rare 7r

early 6 have 42mm deep valley at the petal ends and late have 20mm deep valleys

early are tube type w/o the safety humps seen on tubeless


This is a 7R ET49 no tubeless safety hump



deep 6 on left '72 on 6 w/ tybeless safty hump



6 w/o hump


7 944 part # w/ recessed lugs and larger caliper clearance on right 911 7 on left

[Otter74]

Thanks for the correction on the 944 7s, Bill. I’m not sure why the tires on that car are rubbing (I haven’t seen it, but the wheels looked like 6s in the photo)

My ideal wheels would be a set of 7/8x16 Group 4 Campagnolo replicas, but none of those available not within my budget

[PeteKz]

Bill V is usually right about this stuff (and schools me), but I could swear that the 16x6's sit almost as close to the fender as the 16x7's. I wish I had a 16x6 laying around so I could compare them side by side. I do have a pair of 15x6 and a pair of 15x7, so I could check the ETs and compare those...

[Bill Verburg]

Originally Posted by PeteKz

Bill V is usually right about this stuff (and schools me), but I could swear that the 16x6's sit almost as close to the fender as the 16x7's. I wish I had a 16x6 laying around so I could compare them side by side. I do have a pair of 15x6 and a pair of 15x7, so I could check the ETs and compare those...

15s and 16s have the same dimensions except for the early versions I mentioned above
Here are the specs for most Fuchs used on 911


and the fitment envelopes

[steven c]

I'm following this thread because I want 8 x 16 for the rear of my SC. May move the 7's to the front. Bill, it seems I can buy 911 or 944 8" for the rear, either will work, correct? Thanks

[Bill Verburg]

Originally Posted by steven c

I'm following this thread because I want 8 x 16 for the rear of my SC. May move the 7's to the front. Bill, it seems I can buy 911 or 944 8" for the rear, either will work, correct? Thanks

You can certainly buy them but the 944 8 has the wrong ET for either end of a 911

They are ET23.3 and almost fit the front, some have used them there but the cost is higher ride height and more aggressive camber setting
for the back of an SC/Carrera you will want 8s to have ET10.6 ore a little higher like ET 8 or so. The lower the numerical ET the more the tire sticks out and the less lip room.

you will want 7ET23.3 front and 8ET 10.6 rear

tires could be 205/55 or 205/50 front and 225/50 rear
or for better performance 205/550 and 225/45

[steven c]

Thanks Bill. I got the 7" discussion mixed into my 8" question....sleep will help me.

[zaphodtheprez]

My car came lowered from the PO with 6&7 16s, 20mm spacers and 205/55 225/50 tires.
I checked the fenders were already rolled a bit so I switched to 7&8 16s, kept the tires and ditched the spacers.
No rubbing or contact issues with the new setup.

[Otter74]

Thought I'd update this thread - bought a set of 7s and 8s, they're on the car, all is great.

[Otter74]

Found last weekend that I do get some rubbing on the left rear under hard cornering with bumps:



Doesn’t bother me - including this for future reference.

[Bill Verburg]

Originally Posted by Otter74

Found last weekend that I do get some rubbing on the left rear under hard cornering with bumps:



Doesn’t bother me - including this for future reference.

something is amiss

In the back of an SC/Carrera 225/50 x16 on 8 ET10.6 will have plenty of room at any ride height

[PeteKz]

Check your camber. That will affect clearance too.

[Otter74]

Will look up alignment settings. Car was aligned and corner balanced a while back, and no reason to expect the rear to have changed. With the characteristic asymmetry these cars often has, my left rear is about 1/2” closer to the fender than the right rear. Will check when I put car on stands and remove wheels to do maintenance, but IIRC these are ET10.6. Rubbing is roughly where that smudge happens to be, on the back side.

[Bill Verburg]

Originally Posted by Otter74

Will look up alignment settings. Car was aligned and corner balanced a while back, and no reason to expect the rear to have changed. With the characteristic asymmetry these cars often has, my left rear is about 1/2” closer to the fender than the right rear. Will check when I put car on stands and remove wheels to do maintenance, but IIRC these are ET10.6. Rubbing is roughly where that smudge happens to be, on the back side.

While there can be some asymmetry 1/2" is a lot and beyond the norm.

How did you determine the 1/2"?