Has anyone compiled a list of what wheels work on the 928? It is known by now that the limited applications are because of the front offset. I know there are a lot of wheels out there these days and I think there are more to choose from then most folks know....though still quite limited.

Barring that the GTS has larger rear fenders and rolled lips, front and back, I think it would be nice to have a list of every wheel/size and manufacturer that fit all 928's. Another local 928 friend was telling me it might be possible to go with 19" on the back of the GTS's with 18" up front..

I think the offset thing has been made pretty clear, so I would just like to know ALL the wheel options.

To save listing a few KNOWN wheels, go to: Wheel Enhancement They pretty much have 75% of the wheels that are available for the 928.

Anyone care to add to the list?

 

Great idea Keith ... Mark Kibort had some interesting input recently ...

 

I have a friend who just mounted 19" wheels on his 87, I'm not sure about the offsets but the fronts are 8" and the rears are 10.5". The fronts are close but the rears fit great, no spacers and no rolled fenders. Tire sizes are 235/35/19 front and 265/30/19 rear.

 

Since we are here talking about wheels, I had a quick question. Since I am swapping s4 suspension onto my EuroS, will the calipers clear my 16" BBS wheels? I did a search, and saw someone with 16" BBS on a '90 GT. So I am guessing the only clearance issue is with 15" phone dials? I know offset is an issue. But assuming my wheels clear my S brakes with no problem, will they also clear the s4 brakes? Not big GTS brakes, but standard s4 brakes?

 

I like the Fikse wheels that Abby has on his car - he says they fit perfect.

 

BC, will work. Lawndart, will you please find the offsets and backspacing out?

 

Cool... thanks for the info...

 

Sweet looking silver car. Love those wheels. Looks like the wheels on Pirtle's car. I think his are 18s though. I think they are made by ATP.


Regards,

 

I think there are certain Antera's that will work, also Tech Art and Riva. Speaking of Antera's. I would LOVE to fit the 309's on my GTS. I spoke to a wheel house and they said that they spoke to Antera and they just do not have the offset on this wheel for the 928. There are other wheels that I like, but I don't want to confue the post. I DID see some 18" 8" front and 10" back 993 Cup 1's that look pretty cool.

I forget who makes those wheels that are on the car above. I considered them a while back for the 82, but went with the C2's instead.

So on some of the wheels already noted, do you guys have model numbers or model names?

 

Just to play devils advocate for a minute..... 17" wheels are the largest ever approved by Porsche for the 928. You very well could put undue stress on the wheel bearings using something larger. In addition, those big wheels are heavier and hurt performance and ride quality. I guess some choose to hurt performance and durability for a "look".....just not my bag I guess

 

Thanks Randy. It's ironic that today while discussing Sharks with another Rennlister, your car came up...

Your car was titled the nicest cab and also one of the best looking engines out there.

It was mentioned you have a bar in the back of that cruiser.....

If so, that's totaly cool!

back ot...

As Randy stated, the offsets are perfect. No spacers and no rolled fenders.

Sizes, Front 17x9 with 255/40ZR17 - Rear 17x10 with 265/40ZR17

These were originally purchased at 928 Specialists, and I also know someone else that put wheels on their Euro with no problems that were purchased through them...

Seems like DaveR really knows his 'Stuttgart' when it comes to getting these offsets perfect. The shop that put them on could not believe how perfect they fit with that much rubber.

 

My car also wears 17x9 and 17x10 wheels ala Dave Roberts. I have 255/40s in front and 275/40's in back, fit like a glove. Of course mine is a GT with factory rolled lips and the rear ones clear by less than 1/4 inch but no rubbing ever, street or track.

And to second Randy's motion, I love the Fikse FM-10's like Abby's, especially on the dark colored cars.

 

Brent, i would put more trust in what has been race tested than the "spec" wheels that porsche recommends. second, a car is a car, and a 3500lb car deserves at least what the vet came with in the 1980s, and that was certainly MUCH larger than 7" rims (15-16" diameter)
Next, Anderson and I have been racing with (and many others, but not as frequent) with 9.5" 11" rims on my car and 12-13"s on His on stock wheel bearings. (certainly no issues)

and finally, wheels hurting performance???? HOW IS THAT??? Lets see, 7 years ago, i showed everyone that a 5lb difference per wheel is negligible as far as hp goes 3-4th gear. (as it is time dependent on the effect to HP) what 5lbs does effect hp is that on a 17" rim if it is the tire weight , its about double as if it was in the car, if it is on the rim its about 1.4x the actual weight as it is rolling. so, 5lbs on a wheel or tire, is the same effect as if 7-10bs were in the car riding as a passenger! not a big deal.

As a note, larger wheels do not add to the rolling mass really, as usually the heaviest part of the wheel tire combo is the tire. hooseirs are 25lbs a piece and Toyo RA1s as well as most steel belted tires are close to 30lbs a piece. the wheels weigh close to 20lbs for racing rims (big ones) and 27lbs for street rims aftermarket/cheap. so, what would you rathter do, increase the diameter of the wheel and get less of the heavy tire or visa versa. in the end, as long as the rolling diameter is close , you aint changing much of anything as far as weights.

probably the lightest package will be with the biggest rims possible.

as far as performance, look to those who race on them. 18s seem to be the best performance. 19"s may be too much, and remove too much sidewall that may make a car under or oversteer, even with lowering pressures. but certainly we have proven that 17s and 18s are the best for our 928s! (and certainly look the best, dont you think?)

Mk

 

Keith,

You may want to Talk to Greg Shickle. He bought Randy Grubbs 93 GTS and had it at the owners club convention. He ran 295/30's out back on 18 inch rims. Also ran 255/35's out front I think Rgardless, him and DR. did a good amount of Homework with offsets getting them to fit right. I think he removed his rear spacers as well to make them work. Also, Jim Mayzurk here in DFW land has Mark Anderson's old GTS (ex-covergirl) from the brochures and is running the 295's out back as well.

Shick could give you a pretty good idea as to how they run. He run's the K28R's and I think Jim Runs something that looks like an HRE wheel. Here is Shick's bellow. Good luck

 

Mark, surprised you responded to Brents post over the wheel size. No offense Brent, but the only reason Porsche made that statement about the 928 is that you get less tire side wall on an 18" rim due to the wheel well size. The 928 was designed with comfort in mind. Anyone running 17" should already know by now that they've probably a bent rim. ..meaning out of round. Because the wheel center is located so far out on these wheels, there is no real support towards the inner rim lip. It doesn't take a serious bump to throw them out of whack. 18" and you will most definately end up with a bent rim. I am willing to take that risk as others already do. More bearing stress? More weight? Where did this info come from?. Stay with your 17"...they still look good.

Chuck, thanks for the info, but I am just trying to get a list together of Wheels/rims that will fit the 928 offset. It seems apparent at this point, judging by the response, that not many folks know. I think I may have to put together a list of manufacturers and models so we all know what is out there for our cars.