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Yes it would and he's really already too low on offset to start since an 8.5" wide et 52 is really a 911 fitment and not a 928 one. The 928 et on an 8" wheel should be 60-65 or at least high 50s (57/58) especially if the car is riding slightly lowered like the OP states.
So comparing what we're talking about to an ideal 8" wide et 60 wheel, being 1/2" wider means for the same offset the wheel will be 1/4" further in and 1/4" further out, or about 6mm. That's like an offset of 54. Now his offset is 52 instead of 60 so that's another 8mm out, now we're 14mm further out and we're talking about another 3mm spacer so a total of 17mm further out than ideal.
If the car is lower than stock, I think you're going to destroy your fender if you hit a mid corner bump that compresses the suspension at any type of speed. At a minimum you're going to need to roll the front fenders, but I would probably find a wheel that's a better fitment to the car and application.
On my '79, I've done something similar but am running the 993TT rotors with Big Blacks (GTS versions that are larger than S4) and the 928MS caliper adapters. My wheels are:
Front - 18x8 - offset 57 with 235/40-18
Rear - 18x10 - offset 65 with 295/35-18 and 15mm spacer
The car is not lowered. Here’s a shot of it at rest. The tolerance is so close that even a 1mm spacer might do. Any recommendations on where to get a thin spacer like that?
The car is not lowered. Here’s a shot of it at rest. The tolerance is so close that even a 1mm spacer might do. Any recommendations on where to get a thin spacer like that?
Adaptec Speedware makes excellent spacers and is a board sponsor here.
You have a shot from the front down the side of the car like the perspective I provided in one of my pics? Have you rolled the front fender lips?
Here’s the only shot I have down the side. It’s always been close but I haven’t had a problem with the tire rubbing before. I may have to roll the fender now.
I’ll probably start looking for different rims too but it’s not in the budget right now.
I would think you could just add a thin washer to each stud. We did this this with a Lotus Elan and it worked fine. My 86.5 had GTS brakes and the only option was to change the wheels which I was not keen on doing for I wanted to keep the manholes.
I would see if you can test fit an 89+ front caliper, that will likely give you the clearance you need. I would not use any washers on the studs, that's just a bad idea as the surface area of a washer is so small they will crush over time causing your lug nuts to loosen and then very bad things will happen.
I have a pair of 3mm spacers you can have for the cost of postage.
I would see if you can test fit an 89+ front caliper, that will likely give you the clearance you need. I would not use any washers on the studs, that's just a bad idea as the surface area of a washer is so small they will crush over time causing your lug nuts to loosen and then very bad things will happen.
I have a pair of 3mm spacers you can have for the cost of postage.
Thanks fro the offer! I already ordered 1mm through 3mm spacers to try out. Now I’m looking into how to roll the fender.
03-05-2019, 08:00 AM
