f1av8trfan

I have done search without an answer. What issues will I have running 265/35-18 on the front with 275/35-18 on the rear. I am running Enkei RPF-1 18x9.5 +15 with Swift Spec-R springs and a Whiteline kit.

Rubbing, issues with different sizes front to rear, etc. Thanks!

LaXGSR

You can't run different size tires on an AWD car - it will destroy your diffs. Please always stick to the same size tire all around. It's the tire circumference that matters...

Iowa999

iTrader: (1)

He could always drive around with his handbrake on....

f1av8trfan

That is what I thought but figured I verify it. Thanks!

raytrix

iTrader: (12)

Do it, you'll be the first one to pioneer this setup. Ton more grip at the rear for sure.

laksman91

iTrader: (4)

Didn't MrPurpleEvo run this??

Iowa999

iTrader: (1)

Stop. It's one thing for me to joke about disabling the ACD using the handbrake; it's quite another for you two to actual encourage anyone to do this.

HAHAV8

Well there are actually plenty of AWD cars that run staggered setups, which in most cases have a larger tire on the rear. Not sure how it would work on the evo, assuming you run a stock size in front, with a 275/35/18 in the rear, they're the same diameter. I don't see a point in doing it, though....Why not just run 265s all around, or even 275s if you want to some fender work.

Iowa999

iTrader: (1)

If you have an open center (or a center that pops open when you pull the handbrake), then you're fine. It's a bad torque split, but won't do any damage. But if you have a limited-slip center that continues to work, then it's downright silly.

KyleH

iTrader: (3)

They won't be the same diameter. IIRC, the 2nd sequence of numbers in the xx/xx/xx sequence is the % of sidewall to tread width.

For instance -

265/35 = 35% of 265 cross-section = 92.75mm sidewall
275/35 = 35% of 275 cross-section = 96.26mm sidewall

I suppose if you found a 275/33.7/18 you'd be alright.

As someone pointed out, if running an open center differential to handle the front to rear mismatch you could probably get away with it. But everything I've gathered about the X would point to sticking to matched tires all around.

HAHAV8

I personally would never do it, there is no reason too. There isn't a staggerd setup on this car, but however many AWD cars do run different tire sizes in the front then rear.

But the 275/35/18 is the closest size to stock available, for an 18" wheel.

Iowa999

iTrader: (1)

Really?

I mean, yes, there's a few exotics, but many?