From my initial measurement of the S14, this is my finding for rim and tire sizes with no fender pull or roll:
Front : 17x8 +25 offset
Front tire: 225 - 45
Rear: 17x9 +25 offset
Rear tire: 255 - 40
I haven't bought the rims yet or test fitted any, but this seems accurate because there is alot more room in the rear than the front.
The 17 x 7 (unknown offset) rims I have on right now only has half inch of suspension clearance in the front, but 1.5" in the rear. This is with 1" of space to the front fender with about the same in the rear.
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