Those tires are the same diameter (26.7"), so they'll work fine. Try http://www.tirerack.com to get specs on tire sizes. Brand isn't really important because all makes in a particular size are going to be within .1" of each other. And yes, as stated above several times, the wheel dimensions are pretty much irrelevant. Tire size is the only factor that matters. And many people on here are running 20's with those sized tires.

 

you guys like these rims on a 06 g35x ? http://cgi.ebay.com/ebaymotors/ws/eB...ht_3941wt_1167

 

My only concern, and many here will agree with me, is that 4 new wheels for that low of a price probably means they just aren't that strong. Hit a pothole with some OEMs or quality aftermarkets and you're probably fine, hit it with cheap wheels and you've got a bent rim. It's a huge repair hassle no matter what, but now you might have to find a matching replacement for a possibly obscure wheel.

If you want an 18" wheel, the best and cheapest thing you could do is find some Coupe 18's or Sedan Sport 18's. Or look for some other Infiniti/Nissan wheels like Z Sport Editions or something from an M. Or go aftermarket and spend the money to at least get a name brand.

 

you are correct about that, i just cant find like 18 in coupe rays or 19 coupe rays for around like 500-700 used, someone that will ship to NJ

 

If you're worried about bending one and then not being able to find a replacement, you could just order 5 wheels

 

They aren't available all the time, but they do show up pretty regularly. Also check Craigslist and some of the other G35 site (G35NYC, G35Frenzy, etc.).

He does live in New Joisey, so maybe 6 would be better.

 

^Yikes. Good point.
I haven't been up there, but I've heard it's bad.