Thread: Tire Size question

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  1. #1 Tire Size question 
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    Hello everyone I have a quick question about tire sizes on the GXP. I currently have the stock alcoa rims on the car (18x8 on front 18x7 on back). Is it possible to run 235/50r18 on all four corners or 245/45r18? Or what same size tire could be used on all four corners? Not looking to rotate them because I know the rims have different sizes I am just looking for the same size tire. Currently looking for tires and with the staggered set up the selection is limited so any advice would be appreciated! Thanks!
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  2. #2 Re: Tire Size question 
    Killa Bee Scottydoggs's Avatar
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    your tire size is on the driver side door. open the door and theres a sticker near the lock.

    another member whos got a gxp changed to a different size tire and his abs was acting up from it.

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  3. #3 Re: Tire Size question 
    GrandPrix Junkie SgtMarshal's Avatar
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    I put a 225/40/18 on the front and had the oem size 225/50/28 on the back and car was doing crazy things like abs was actuating at random times. I don't know if that size would be ok on all 4 wheels, but I think having the same size tire would be fine. I ordered a set of 225/45/18 to put on an extra set of wheels that I have that are 18x7.5 and I'm hoping they work.
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  4. #4 Re: Tire Size question 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    245/45/18's work just fine.

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  5. #5 Re: Tire Size question 
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    So 245/45r18 should work? They’ll fit on both the front and rear rims without rubbing or anything?
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  6. #6 Re: Tire Size question 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Correct and they won't rub at all.

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  7. #7 Re: Tire Size question 
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    Quote Originally Posted by SgtMarshal View Post
    I put a 225/40/18 on the front and had the oem size 225/50/28 on the back and car was doing crazy things like abs was actuating at random times. I don't know if that size would be ok on all 4 wheels, but I think having the same size tire would be fine. I ordered a set of 225/45/18 to put on an extra set of wheels that I have that are 18x7.5 and I'm hoping they work.
    225/45/18 are only going to be 25.9" tall. That's .8" shorter than stock.


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  8. #8 Re: Tire Size question 
    GrandPrix Junkie SgtMarshal's Avatar
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    Quote Originally Posted by stealthee View Post
    225/45/18 are only going to be 25.9" tall. That's .8" shorter than stock.
    that is fine with me, hopefully I won't need to adjust the tire size with the hp tuner. I went with this size because they were the cheapest ones I could find.
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  9. #9 Re: Tire Size question 
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    255's are the OEM correct tire size.

    Not 245's or 225's.

    The smart thing to do would to run two sets of front wheels all around so you can rotate your tires like a normal person because staggered FWD cars were a stupid thing.
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