The rims on the GT-R are actually the wheels for my G35. They are 19x8 front and 19x10 rear. Have to make sure that the tire height is exact so not to burn up the transfer case. I run 275/40/17's as track tires on the stock wheels. 18x10 seem to be the most common. I will get a set when I can afford them down the road so I have been using the G's wheels. The G has been down for a month for more HP. Change the ECU and injectors and increased more boost and the clutch would not hold. Change the clutch and now boost leaks. Have all the couplings changed with t-bolt clamps and now I am not even sure anymore. Money pit. Blah