I believe stock size is 225/45F and 245/45R.

Can i fit 245/40 and 265/40 on the stock 18" performance tires?

What is the widest i can go?

 

I think the wheels are all 18x8, 265s are best with 8.5s

 

They say the max to go on 18x8.5's (Rays) are 275. I wouldn't go higher than 255's on the Performance rims.

 

I ran 245/40 Kumho MX all round on my Performance last year.

I'm now running four 8.5" Track rims and plan to run 255/40 Azenis all round.

To answer the next question, no there's no VDC issues.

 

Got any pics of the 245/40 tires on the performance rims?

and why did you go with that setup, aren't the performance wheels staggered?

 

I went with that setup to remove most of the understeer, improve the braking, and frankly make the car look better.

I'm really not into that hot rod look of a taller rear tire. Even the Hotchkis spring drop accentuates a non stagger setup with the rear getting a 1/4" larger drop than the front.

If the VDC doesn't mind, why not?

Here's a pic of 245/40 mounted all round. The stance is from JICs, not Hotchkis - although it's not far from that.

 

did you purchase two additional rear wheels and mount them up front, or are you running the stock rims all around?

 

In the pic, those are the fully stock 18x8 OEM Performance rims.

Right now, I am running 18x8.5" Rays Track rims all round which did require purchasing a second set of rims and then selling the four front 18x8.

 

oh, i didn't know the performance rims where not staggered. lol.

i guess 245/40 it is then!

 

if you want the stagger, go 245/40 front and 245/45 rear.

 

Do you have any ABS or speedometer issues? I am thinking about running 265/40/18 all around on the Track 8.5s, but I dont know how much this will mess up everything.

 

The wheels themselves are not staggered, the tire height variance contriubtes to a stagger.

 

Speedo is a little off because the rear is effectively a smaller gear. No ABS issues.

If the manufactuer indicates that their 265/40 is approved on an 8.5" width - then go for it. Having said that, I'm not sure if you're aware but the front wheels on a Track package are a little more narrow at 8".

 

Yeah I know that they are 8" in the front. I was going to buy another set of rears.

 

I race on Kumho Victoracer's 255/40 and 275/40 on the stock 17's...7.5frt 8rr. Looks a little funny, but works fine.

 

got pics of that?