20" rims an sprint lowering springs

[BLKGAGT94]

Ok i no ppl been sayin 20" rims might fit on a 94 so hopefully they work. Ppl are usin 235/35/19 tires an them tires are are lil bit bigger than the 225/30/20 tire. Hopefully they dont rub when i drop it with the sprint springs an how wide of a tire can a 92-98 grand am tuck inside of the fender wheel. Can it tuck a (225) an fenders all rolled

[BLKGAGT94]

tire sizes http://www.miata.net/cgi-bin/tirescgi

[BLKGAGT94]

Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
235/35-19 3.2in 12.7in 25.5in 80.0in 792 0.0%
225/30-20 2.7in 12.7in 25.3in 79.5in 797 -0.6%