Thread: What are the correct size tires (stock) for 2008 GXP

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  1. #1 What are the correct size tires (stock) for 2008 GXP 
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    I look at the tires briefly the fronts were 255/?/? I think. The back that are on it are 225/50/18. I just need to know what I am getting myself into. The front tires (Kumho ECSTA ASX) look new but the back (Bridgestone Potenza) look like they are original... and need replaced. I have notice one thing on these cars is that the tires seem to cup in on the back edge of the back tires?? If you understand what I am saying to this I would appreciate some answers.

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  2. #2 Re: What are the correct size tires (stock) for 2008 GXP 
    I live here. 02NavyBlue's Avatar
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    2006 Grand Prix GT S/C 109k - Modded Transgo Shift Kit, Gutted Airbox, Dash Cam, and Inlays. Retros soon to come.
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  3. #3 Re: What are the correct size tires (stock) for 2008 GXP 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    GXP's run to different size rims, 18x8 fronts and 18x7 rears, so the tires are different sizes.

    If you open your drives door and look at the sticker on the B pillar it will tell you what size and tire pressure the car runs.

    So 255's upfront and 225's in the rear are correct.

    The rear tires tend to cup from lack of rotation, and those potenza are likely a directional tire and you can't rotate side to side to help with tire wear. I would try and find a non directional tire as a replacment for those 2.

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  4. #4 Re: What are the correct size tires (stock) for 2008 GXP 
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    Thanks... I hav'nt bought the car yet but am going back and fourth on it over the weekend about buying it. I can see that I will need to buy tires for the back. I am also trying to input!!
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