From what ive read awd is supposed to have the same rim and tire sizes all the way around for best performance... I wanted to go with a 255x35x18 tire in the rear total circumfrence is 1997.11 and a 225x40x18 in the front....total is 2001.82 difference of 4.71mm this is the closest combo i could come upwith i tried all the sizes. Is thise close enough not to cuase damage? Or what would happen? if not im going to go 245x35's all the way around.... I just wanted the aggresive look of smaller in front and wide in back

 

Keep them within 5% difference front to rear and you'll be fine. 4.71 mm is well within that.

 

sweeeet thanks for the info...i think im gona go for it then tomarrow morning.... I was looking for a way to get 255's but just didnt want them on the front of the car/....a tad wide in the front... I will post pics with new rims Plus the 225's r wayyy cheaper saves me money on the front

 

You know if you go different sizes & the tires are unidirectional you won't be able to ever rotate them? You're going to go through tires a lot faster that way.

 

they will just tak the tires off the wheels and swap them left and right. that's how we do it on my mom's boxster.

 

Well most performance tires r unidirectional now...so id have the same problem even if they were all the same size...BUt its already to late i just got them put on..... i will post pics soon.... The rims r 25 pounds each so im not sure what the stock ones r... BUt the stock tires i know now were SOOO noisy car runs much quiter now.... 225x40's 255x35's rear with +35 spacing i STill had to put a spacer AND shave the caliper down a little for clearance in the rear

 

Well sure, you could take the tires off & swap them, but you've got all the charges associated with that including dismount / mount / balance, plus the time involved (!). You're looking at probably $60 minimum every time you do this, right?