Can I use these on my rear OEM wheels and keep the 225/45/18 upfront without any issues? VDC or sever under steer?

 

the Z is a heavier in the rear car.. u will notice little more understeer with a non staggered setup.

oem wheels are 8 and 8.5 right?

 

I think they are 8.9 or 9F and 9.5R

I put 275/45/19 on my stock rears with no issues....the issue with the same size tire is that it feels wierd and requires adjusting...I am running 245 F and R now and it took about a week to get the hang of it...but no codes or engine related issues.

 

i have 245 in the front and dont have any issues. not really sure about a 255 tire but depending on your offsets you shouldnt have a problem

 

just drove to richmond...car wiggles back and forth in the groves bad with the same size tires...although I am running 245s....so maybe bigger would be better....

cant wait for my rims! URGH!

 

think you guys are confused on his question, he is looking to run 255 in the rear and keep his 225 up front. I don't see it being a big issue

 

The difference in tire height is 27.0mm. I think you are OK.

 

I ran 245/55/18's in the back with no issues.