Well I need new tires for my Z because the rears are really bald. I have the OEM track Rays. They are 18x8 in fronts and 18x8.5 in rears. I want to get bigger tires for the front and rear so i was thinking 245/45/18 in the front but im not sure what size to get for the rear. Also I daily drive this car. Any info will be helpful.

 

I am using 235-40/18 & 255-40/18 on my track wheels, no probelms!

Major

 

If it were me. I'd put 245/40/18 in front and 255/45/18 in back. Maintains the stagger, and will reduce your understeer.

Lou