Thread: GXP Tire Questions

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  1. #1 GXP Tire Questions 
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    Has anyone put the same size tires all around on a '08 GXP? The fronts are now 255/45zr18 on factory 8" rims. Why not the same tire on the rear 7" rims?

    Or, is there a 50 series or 55 series that would give better ride quality?
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  3. #2 Re: GXP Tire Questions 
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    255 is a bit much on a 7" rim. I have 245s on 7" and id say that's about the limit unless you have plenty of sidewall.
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  4. #3 Re: GXP Tire Questions 
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    yea I would say the same maybe find a gxp at the junkyard and pull the 2 8 inch rims off that?
    2004 gtp SD headers, e85, #60 injectors, Walbroh 255lph, junkyard custom fender well intake, lq4 MAF, 3.1 Pulley, 1.95 rockers, l76 springs, shift kit and tranny cooler
    BMR trailing and rear control arms, zzp STB's, tubular control arms, Dorman and Addoco sway bars, intense coilovers, poly bushings and mounts.
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  5. #4 Re: GXP Tire Questions 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    245/45/18 is the size to run all 4 corners. But I would find 2 more 8in rear wheels so you can do real rotates.

    SMGPFC Member #1
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  6. #5 Re: GXP Tire Questions 
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    Anyone have a pair of stock 8" Grand Prix GXP rims for sale?
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