LUCKY DAVE

This was Dave951's idea, and it's a good one.
Surely (Shirley?) there is someone on this board who knows all........

Dave951

Model: 85.5 - 86 951
Max Diameter: 18"
Max Front Width & ET: 9" 52mm 1" Spacer
Max Rear Width & ET: 11" 45mm 1/4" Spacer
Offset/ET: 48mm to 65mm

NOTES: 11" 45mm wheels will have interference issues with top shock tower bolt.

Model: 87 - 91 951
Max Diameter: 18"
Max Front Width & ET: 9" 52mm
Max Rear Width & ET: 11" 65mm
Offset/ET: 48mm to 65mm

NOTES: 997 wheels require 7mm front spacer to mount flush.

Kool

Don't call me Shirley.

And the thread is not stuck.

95ONE

I vote for it to be stuck. Every other day there is a new "Do these wheels fit" post.

bigdeano

This thread should definitely be stuck and people can keep adding to it.

fbgh2o

These are superb tools to calculate the impact of changing wheel and tires sizes

http://www.bigcustomwheels.com/info_specs.jsp

http://www.1010tires.com/WheelOffsetCalculator.asp

Dave951

More useful information

Go to the link below, then click on Felgengewichte under the information section. Then at the top there is a link for the English version of the same page.

Porsche Wheel Weights & Sizing

HansB

Great links, thx. Just sticky these, will answer all Q´s

951Porschiste

On a related subject, I still have not found a descent answer to my interrogation:

My car is an 86 951, but I have late offset (52 mm) 16" PD's. The front wheels have a 10 mm spacer, but the back wheel have no spacer.

How is it possible to run 52 mm offset wheels in the back of an 86 without spacers?

Owain

I'm not sure if this is exactly what you're looking for, but here are the wheels I use on the street:



They are 10-spoke wheels from a 2002 911 and are 7" front and 9" rear x 17" diameter, I think they are 50mm offset front and rear. They are actually made by BBS, and I'm not sure how much they weigh, but they feel quite light and I've heard that they are some of the lightest 996 wheels made.

The rears fit fine on a late offset car, but the fronts won't clear the bearing dust cap without a small spacer. In the pic I have a 7mm spacer on both the front and the back. I put the ones on the back just to move the wheel out a bit more, you know, for looks There's no rubbing anywhere that I can detect.

I also use them as wets on the track:

Kool

So who is an admin that can Stick the thread?

I found this link for weights and offsets for a bunch of Porsche wheels.

RolexNJ

As per the request of several people, we can stick this up for a while.

xsboost90

ok so as someone who has experimented with a few wheel combos i can just say what ive seen. My car is an 86 turbo but ive also had an 89 n/a and a 924s.

i ran 8" rear factory turbo phones all around on my 86 for track use. These fit no problems but the fronts sit out towards the fender more than the rears making an 80's chevy 4x4 look. I run extended rear studs w/ a 15mm rear spacer to kick the rear out alittle and even out the 8" wheels all around.

When running 996 18" x8/11 hollow spoke twist wheels, i had to run a 1" front spacer (wheel was 52mm offset) and on the rear (11" wide 295 tire) i found that i needed to use the 15mm rear(45mm offset) spacers and an additional 7mm slip on spacer to clear. Now i also run 1.5degrees rear camber so that didnt help and prob facilitated the need for the extra spacer. Some have stated that they needed no rear spacers to fit these on an early car but it varies by the placement of your rear suspension which can be moved slightly side to side on install, and your camber.

while running the turbo twist wheels i had bolt on front spacers-but i could not find them w/ enough clearance to clear the front hub - i put them on a lathe and took just a couple mm out of the inside diameter of the front and they cleared and remained hubcentric. Once i bought my speedlines i noticed that while the flat mounting surface on the twist wheel was in a star shape that allowed the nuts for the bolt on spacers to clear the wheel, the speedlines had a circular mounting surface and the wheel sat up on the nuts. I pressed the studs out of the bolt on spacer and installed 1" longer front studs and made it a slip on front spacer- still hubcentric. Ive been running this for awhile now but you need steel or hollow nuts to run w/ early offset (track wheels) since the studs stick out alot further due to the extra stud.

I am currently running 18" speedlines that say 55mm offset inside each but im not sure how accurate that is since they are three piece wheels. I am running the same spacers but w/ 7mm slip ons on each side in the rear to make them closer to the wheel well. (currently getting ready to convert my car to late offset to eliminate all spacers if possible.

On my 89 (late offset ) n/a car i had plenty of wheel choices and ran...


-turbo twist- boxster/turbo wheels 17" no spacers

-boxsterS twists-17" 7mm front slip on spacers needed to clear front hub
-18" Sport classics 993/996 two piece wheels- front slip on 7mm needed, no rear spacers
-turboSclubsport forged (D90) wheels- front spacers needed 7mm due to different front offset on turbo S cars
-stock 15" phonedials 7" all around obviously fit well

fbgh2o

For those looking to upgrade from 16" to 17" I have successfully, without spacers, run the following wheel and tires combos

Front 7.5" x 17" ET25 - 225/45 ZR 17
Rear 9" x 17" ET 17 - 255/40 ZR 17

Front 7.5" x 17" ET23 - 225/45 ZR 17
Rear 9" x 17" ET15 - 255/40 ZR 17

With spacers I have mounted the following

Front 7.0" x 17" ET50 + Spacer=31mm for final ET 19mm - 205/50 ZR 17
Rear 9" x 17" ET 55 + Spacer=37 mm for final ET 18mm - 255/40 ZR 17

In all cases, if your rear suspension is worn (i.e. soft shocks), you will find that you will get tire rubbing at about the 10 to 11 position on the rear fender when the shock compresses.

fbgh2o

Due to inconsistent information on the Internet, there is some confusion about early offsets. I found this created confusion when trying to figure out the right spacer sizes to convert early to late offset.

Here is what I have been able to figure out using the PET catalog.

All early phone dials are 23.3mm offset. This applies to both 7" and 8" wheels and for 15" and 16" diameters. Therefore when making calculations for offset adjustments you can use 23.3mm for both front and rear.

Fuchs with the following part numbers are all 23.3mm offset

951 362 115 90 (7"x16")
951 362 115 00 (7"x16")
951 362 117 00 (8"x16")
951 362 117 90 (8"x16")
911 361 020 41 (7"x15")
911 361 020 41 (7"x15")

The number 10.6mm is sometimes thrown around as both a front and rear offset http://www.cantonia.com/wheel_offset.html. To the best of my ability to figure this out, 10.6mm applies to certain 8" Fuchs (both 15" and 16" diameters) only, with the following P/N 911 361 029 42 & 911 361 029 94.