I have whole 350z suspension with coupe 18s and i don't rub at all.

 

It wont rub on 350z suspension and 19s, i had coupe 19s and no rubbing with two people in back seat

 

Well I had coupe 19's on 40 series tires and stock suspension, and my rears would rub while going over large speed humps. Dropped down to 35 series tires and had no problems. Could have rolled the rear fenders, but didn't want to do anything permanent.

 

I have a set of chrome coupe 18" coming in today. The tires I will be using are P245 45 18. What size of tires are you using?

BTW, I bought a set of silver "03 coupe 18" wheels and tires two weeks ago. The tires that are on them are the standard size for front (P225 45 18) and rear (P245 45 18). One of the rear tires was brand new and the other was bald. I put on the 245 on the front and it does stick out a little bit. I do want to run the 350Z springs, but am a bit concern with suspension travel.

The wheels that I bought a few weeks ago I purchased with the intent to send them out to be chromed since they had road rash on them. Then a better deal came along for a set of freshly chromed coupe 18" wheels that I bought. I now have a extra set of 18" coupe wheels w/o sensors.