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7's and 9's then lower to euro height..
Old 11-10-2014, 06:20 AM
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Originally Posted by Mr. Merk View Post
I had assumed that my '88 only had 6's &7's but never really looked. Just took the tape measure out to the garage and they appear to be 7's & 8's!

My problem isn't really solved though, I need more wheel in the back.
What did you measure?
No matter what you have made at least a small and probably a large error.

Here the dimensions are defined


a 6" Fuch will measure 6" at the bead and then add ~.35" for each lip, total ~6.7"
a 7" Fuch will measure 7" at the bead and then add ~.35" for each lip, total ~7.7"
an 8 will measure ~8.7" at the lips and a 9 will measure ~9.7" at the lips

The best 7ET23.3 & 8ET10.6 are or 7ET23.3 & 9ET15 are going to be abou the best fit, the 7 can be tight on lowered cars, you could even use thin spacers on the 8 or 9
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Old 11-10-2014, 07:21 AM
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I'll double check when I get home. Thanks!
Old 11-10-2014, 08:11 AM
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Question on interesting use of 16x7 front 16x8 or 16x9 rear.
My 86 911 is lower than row. I took a measurement and on rear there is 1" gap between tire and rear fender but less than 1/2 inch on front fender using factory Fuchs with new Continental sport a/s tires.
Would moving rear rims to front be a fit without rubbing? and knowing it is hard to get 16x8 or 16x9 factory alloys, which aftermarket wheels would you recommend for rear and what tires, hopefully continental unless mixing brands is no problem. Should have first asked such questions on the forum this forum before jumping the gun and purchasing all 4 tires 2 months ago.
Last dunb question, would it have impact on bump steer or alignment. car tracks perfect and handles great for my novice hands.
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Old 11-10-2014, 08:16 AM
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Chris, much has to do with the look...
Roslin, this was a few years ago, and the tires in the photo were Toyo RA1.
The tire selection for 16's are very limited. I moved to 17's a few years ago,as the selection and availability of tires is much better.

Here is a more current shot with Fikse FM10 wheels (17x8/9), 235/40 & 275/40/17.

With Rota Fox (17x7.5/9) 245/45 & 275/40/17.
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Old 11-10-2014, 10:47 AM
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Quote:
Originally Posted by pepebaja View Post

Question on interesting use of 16x7 front 16x8 or 16x9 rear.
My 86 911 is lower than row. I took a measurement and on rear there is 1" gap between tire and rear fender but less than 1/2 inch on front fender using factory Fuchs with new Continental sport a/s tires.
Would moving rear rims to front be a fit without rubbing? and knowing it is hard to get 16x8 or 16x9 factory alloys, which aftermarket wheels would you recommend for rear and what tires, hopefully continental unless mixing brands is no problem. Should have first asked such questions on the forum this forum before jumping the gun and purchasing all 4 tires 2 months ago.
Last dunb question, would it have impact on bump steer or alignment. car tracks perfect and handles great for my novice hands.
I'd suspect that if you move the 7s up front, you'll need to roll the fenders to keep from rubbing (I needed to on my '86 targa with 205/55-16 continental extreme contact dw tires) -- As for the rears, another option is to look for a second pair of 16x7 wheels and use spacers to bring them out to the same place as 16x8 --

The folks lamenting about limited tire selection for 16" wheels are generally running 16x9, which require larger 245/45-16 (?? on exact size) that are getting exceedingly rare. 16x7 and 16x8 rears both work great with 225/50-16 and my 16x7 fronts run quite well with 205/55-16 fronts (likely both the size you already have)which both have a good variety of options available
Old 11-10-2014, 11:28 AM
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Quote:
Originally Posted by pepebaja View Post
....
Would moving rear rims to front be a fit without rubbing? and knowing it is hard to get 16x8 or 16x9 factory alloys, which aftermarket wheels would you recommend for rear and what tires, hopefully continental unless mixing brands is no problem. Should have first asked such questions on the forum this forum before jumping the gun and purchasing all 4 tires 2 months ago.
Last dunb question, would it have impact on bump steer or alignment. car tracks perfect and handles great for my novice hands.
If the rears are 7ET23.3 x16, which was the most usual rear wheel, then yes, you can move them to the front, the 225/50 rear tires however will probably not be happy in the front, so should be replaced w/ 205/55

If fitting aftermarket wheels, 17 give you the most flexibility

If using 8s in front they will want ET25-30, the higher numerical ET gives you more room at the lip, the lower less. 225/45 tires fit comfortably w/ those wheels, wider can be fitted but the effort required to do so goes up a lot

If using 9s is back ET15-12 is wanted, again the higher numerical ET gives more room at the lip. The usual rear tires is 255/40. These fit very comfortably.

Again wider tires and even 9.5" wide rears can be fitted, but the ET range goes down and the work required goes up.
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Old 11-10-2014, 11:34 AM
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It's all about looks really. I found 9's for the rear and put my 7's up front.
Looks night and day compared to my 6/7's.
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Old 11-10-2014, 12:20 PM
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Thank you Darrin and Bill.
Will keep an eye out for wheels. Hopefully during holidays coming I'll get lucky.
Thanks again.
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Old 11-10-2014, 07:17 PM
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Ah, what's an extra inch he says modestly...


If I was you I would snap up those Fuchs before your friend changes his mind. Then buy a set of wheel adapters or spacers to fill out the fenders. I know everyone wants bigger wider wheels but for performance the smaller lighter ones have less rotating mass (remember school physics). And sell the cup wheels.





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Old 11-10-2014, 07:38 PM
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I'll double check when I get home. Thanks!
Definitely 7's & 8's

I need 9's!
Old 11-11-2014, 05:24 AM
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Originally Posted by Mr. Merk View Post
Definitely 7's & 8's

I need 9's!
I found the 9's and even more so the 8's for the front almost impossible to find up here in the great white north. The 9's that I bought popped up on our PCA website and were a steal ($1,000) I found the 8's the next week, but there was crack and I passed.
There are sets of 8's/9's for sale out there, but huge bucks.
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Old 11-11-2014, 06:27 AM
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Definitely 7's & 8's
Wrong! Finally pulled them off last night (because I bought new tires) and looked on the back.
Old 12-04-2014, 10:27 AM
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Finally fit 951 8's in front and turbo 9's in the rear. Needs more low.....and camber but this is ok for now. 225/45 & 245/45 Toyo R888R

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Old 03-26-2018, 02:04 PM
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Originally Posted by Mr. Merk View Post
Finally fit 951 8's in front and turbo 9's in the rear. Needs more low.....and camber but this is ok for now. 225/45 & 245/45 Toyo R888R
How are these on the street? Noisey?

Looks like the R888R is the only tire I can get in these sizes.
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Old 05-16-2018, 09:04 AM
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Quote:
Originally Posted by Mr. Merk View Post
Finally fit 951 8's in front and turbo 9's in the rear. Needs more low.....and camber but this is ok for now. 225/45 & 245/45 Toyo R888R

Love this picture!
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Old 05-16-2018, 10:43 AM
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How are these on the street? Noisey?

Looks like the R888R is the only tire I can get in these sizes.
They are getting noisy now that I've about worn them out.

I drove them 5,200 miles up and over a couple mountain ranges. Encountered some snow (which was terrifying.) Had the cruise set on 115mph across the desert on several occasions. Traversing all kinds of different terrains in one day, I never touched the tire pressure so they were over inflated at times which wore the middles down faster than usual.

These tires stuck like glue during one emergency braking situation on the highway and I seriously thought I was going to peel the tires off of the wheels in the tight canyon turns.

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Old 05-16-2018, 02:02 PM
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They are getting noisy now that I've about worn them out.
You wore them out in 7 weeks?
How many miles?
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Old 05-17-2018, 05:21 AM
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looks like 5,200 "I drove them 5,200 miles up and over a couple mountain ranges"
Old 05-17-2018, 05:23 AM
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Originally Posted by GrantG View Post
I think 7's in front and 8's or 9's in the rear would be preferable...

I think the 88's had 8's stock and 89's had 9's...
NO.
factory SCs and Carrera 3.2 had 6 front and 7 rear (no matter 15 or 16).
only WTL/Turbo had the admission of 7s front and 8/9s rear.
oficially Porsche withdrew admission for 7s front on SC due to fender clearance problems (Euro ride height).

Of course this does not reflect what can be done with the car after delivery (and adjusting height, camber off the Porsche spec).

e.g. in Germany you need an individuall TüV check when running 7s front and 8/9s rear.



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Last edited by Flojo; 05-17-2018 at 06:05 AM..
Old 05-17-2018, 05:59 AM
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