What are the widest tire sizes that I can fit on a 2004 Coupe NON BREMBO.
It is lowered with 350Z OEM springs (lowered about .5").

The wheels are 19x8.5 with a 25mm offset.
I want to do a staggered setup.
What is the widest I can go on the front (without rubbing or rolling my fender) and the widest I can go on the rear (without rubbing and rolling my fender)

Thanks in advance for your help.

 

255s front and rear unless you get a wider wheel for the rear.