When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
It may make a difference in the way it steers but it shouldn’t be a big deal as far as I know. But I may be wrong. others will let me know if I'm wrong.
You would be better off staying w/ the original tire sizes. The front rims are 8.5" & the rears are 9.5". If you want to run the same size tire all the way around, you need the same rim size all the way around.
You could probably get away w/ it with your current wheels but I wouldn't recommend it.
You can get 2 more 9.5 rims for the front and run 285/40 all the way around. Spend even more money and get some 11" rims and 315/35 tires for the back, move the 9.5 rims with 285/40 to the front (like ZR1 set-up). Either way you will be spending good bit of extra money. Factory set up with different sizes was meant to give better handling, some think it is better, some say not.