[arpad_m]

Happy PS4S user here. 315 width will be fine, but don't expect a drastic traction benefit from that tiny difference between that and the 305. I had to relocate the wiring harness for the 315, but check your driver side rear wheel well, maybe the main body harness is routed differently on newer Camaros.

In fact, the tread width difference between 315 and 305 is only 0.2 inches (5 mm) for the "standard" PS4S, so the contact patch won't be much bigger at 32 psi, only by 3-4%, but then the 315 tire itself is 2 pounds heavier.

Interestingly, there seems to be a Porsche specific version of the 305 that has a much greater tread width (11.6 vs 10.9), you'd be better off just getting that vs the 315 with a tread width of 11.2 inches.