u can make them fit, but u will need guard work, silvias usually have more clearance in the rear guards, the fronts are similar how ever.
heres a few pics, R33's have a bit more clearance than the R32's.
17x9.5 +13, 235/45 30-40mm flare (mock up with unfinished guard)
17x9 -1, 215/45, 30-40mm flare
17x9 +16, 225/45, rolled guards