On my '87 3.2 (w/o turbo look option):
Factory option Fuchs
Front: 16x6, 205/55
Rear: 16x7, 225/50
Conti ExtremeContact ultra-high performance all season
Yes, I could have gone wider, but (as shown by my tire selection) I like to drive the car year-round.
I'm planning on a set of 17's with killer summer-only tires eventually. Probably Rota Fox 17x7.5 & 17x9, tire size
tbd (as i haven't decided if I want to have the fender lip rolled).