Does any bondy know if a set of wheels off of a 90+ ZX fit on a z31.

 

yes, with a 1/4 inch spacer on the front wheels.

 

3/4" adapters are the smallest size I would use. I use 1.25" adapters up front & 1" adapters in the rear so I can run 18x8s up front with 245/40/18s & 18x10s in the rear with 285/35/18s. My wheels are for a Z32 TT. Perfect fit.