The AAR was STANDARD with the 15x7.0" "Rallye wheels" & there was no OPTIONAL wheel tire combo from the factory.

That being said, the current tire size for the factory staggered look would be 225/60/15 (E60-15) front & 245/60/15 (G60-15) rear.
These end up "looking short" by modern standards, so 1 size up would be 235/60/15 (F60-15) front & 255/60/15 (H60-15) rear.

My preference would be 1 more size up the ladder - 245/60/15 (G60-15) front & 275/60/15 (L60-15) rear. These are big for the front, you may have clearance issues & some consider 275/60/15 too large for a 15x7.0 wheel - but they work for me.