[carbuilder2002]

yes as far as I am aware they both used the same rims and for a road going GTR they would be the same tyre, race cars naturally wore a variety of tyre types depending on track, surface and conditions with possibly some slight shift in width and to a lesser degree aspect ratio.
No doubt there is a regular on here who can give you the exact low down on most of the variations.
The rims are 18" x 10" Front and 18" x 13" rear though I also believe some had 9 1/2" wide front rims?