After doing a lot of researching and obsessing over wheel sizes and fitment I landed on a combo I'm very happy with.
996 twin turbo hollow spoke wheels in 18x8 and 18x11. The tires are 225/40/18 and 265/35/18 Federal 595RS-RR. These tires run a little wide so they're more like 235/275.
The fronts have 15mm spacers (unneeded, but look better with the way the rears fit) and the rears have 13mm spacers. The rim clears the rear struts by about 2mm. The ebrake cable is tied back to the control arm but wasn't rubbing. I just did it to be safe. The 265s have a very mild stretch so that they don't extend beyond the wheel at all.
I'm lowered on bilstein struts and eibach springs and it doesn't rub at all. I thought I might have to roll the rear fenders but was delighted to find out it was unnecessary.
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