Going to purchase tires soon, was wondering stock size are 225-45-18 and back are 245-45-18... Could i use 245-45-18 on all four tires? anybody done this before? And how much is your new tires you purchase? and brand? thanks

 

Your handling will be better...it'll be neutral because you'll decrease understeer but you might get the SLIP light on more often because the VDC system requres a ~1" height difference between front and rear.

 

If you're worried about price, get the Yokohama AVS ES100's in stock size.

Then get some stillen swaybars and set front soft, rear med and your
car will handle very neutral.

 

To reduce the understeer, maintain the stagger, and keep the electronics happy put 245/40/18 in front and 245/45/18 or 255/45/18 in the rear. The car will be more neutral, but I don't know if that's what you want or not. The electronics expect the stagger to keep you out of trouble, I would not upset that and put the same size tire front and rear.

Lou