I'm running 18 x 10 + 12 which is perfect fitment for GTR. So these will sit just slightly outside your guards about 9.5mm...I dont really see an issue with it unless your in Melb with defects...just run a bit of neg camber and you'll be fine
Correction wheels are actually 18 x 9.5 + 22 offset.
The two tyres that were on the rear actually have camber wear on them. So only front 2 tyres are 70% tread rears would need to be replaced.
Where abouts did you get your G4 coilovers, im after a set for my 33 gtr? Had them in my last car and are alot better than Pedders or Teins ive had.
BUMP good coilovers worth the money even used.