My bmws have all trashed the inner edges first at the back, although all are excellent on fronts even if regularly pushed hard.
Rear of the e36 has camber set to the minimum possible with standard arms, lowering it will have added some though.
I always intend to get tyres rotated part way through their life, but never remember until they're too low to be worth saving
Edit to add, I've considered buying a tyre removal machine as its such a ballache carting wheels and tyres around, although my local fitters are very good and will stick any tyre on any wheel and balance it for a tenner.
It does annoy me when before I'd found them you'd turn up and they'd have people sitting around doing nothing but they'll still refuse to make £40 for half an hours work as you've not bought the tyres from them. Surely £40 minus a few pence for a valve and some balance weights is better than £0
Too many old sheds.