So heres the deal, I have almost brand new 245/45/R18 tires on the rear. I now need to get new tires for the front. Would i be able to put the 245s on the front rim and put 265/40/R18s on the rear?

I have the stock 08 rims.

Any help would be greatly appreciated especially since this is my first sports car.

 

Nope, but you can buy some 245/40 fronts. The fit great and improve handling.

 

Front tire is taller than rear. Do some reading about tire size and proper operation of VDC.

 

So have 245/40 for the front and 245/45 for the rear?

 

Yes, leave your 245/45-18” tires on the rear and put 245/40-18” tires on the front.

I’ve run this setup (245/40-18” front with 245/45-18” rear) and it provides great handling since the front 245’s turn-in much better than the stock 225’s on the front (which has more under-steer).

The caveat is that rear tires wear more quickly than the fronts on a RWD car. That means your perfectly balanced neutral-steer will slowly migrate towards over-steer as the 245’s on the rear wear more quickly than the 245’s on the front. Over-steer results in tricky handling.

Do this: Install 245/40-18” on the front, and as soon as you begin noticing any over-steer as your 245/45-18” rears wear, replace the rears with 265/40-18”. If your rear wheels are 18x8.5”, I think you should be OK with 265’s on the rear.

--Spike

 

Awesome, thanks man, i appreciate the help.