Just got a Rep on this old thread. Don't know who from. But just to up date it. I'm now on 345's on the rear with the same rim specs, with a little bit of poke. With camber at -2. :D

I’m running 285/35 20 on the rear with 1” spacers and camber rods.
No specs on camber since I bought the car this way and have no information.
The dealership put the taller tire on at no cost as it’s all they had in stock.
They are a tad tall and I’d like to change them when covid ends and I can travel to get tires.

If I remove the 1” spacer and put a 245 on will the inside of the tire clear the fender well? The outer will have plenty of clearance.