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Maximum width on Gp

This is a discussion on Maximum width on Gp within the Tires & Wheels forums, part of the W Body Tech category; HI..i'm new here. I have a 2001 Grand prix Gtp,and my wheels are 17 inchs Eagle alloys. Tires: 245/50/17.. I ...

  1. #1
    SE Level Member Dunes2006's Avatar
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    Question Maximum width on Gp

    HI..i'm new here.

    I have a 2001 Grand prix Gtp,and my wheels are 17 inchs Eagle alloys.
    Tires: 245/50/17..

    I have a deal on 19 inch wheels and those are with 255/40/19..

    My question is...will the 255 fit on quarters or not..

    Ho and before i forget..i have a 1.6 drop

    thx

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    GTP Level Member carl06GT's Avatar
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    Default Re: Maximum width on Gp

    depends on the offset. bio will be stopping by and letting you know im sure

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    SE Level Member Dunes2006's Avatar
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    Default Re: Maximum width on Gp

    if i'm right.. i think the offset is +38

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    GTP Level Member DanGTP's Avatar
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    Default Re: Maximum width on Gp

    You'll probably just have to roll your fenders to avoid any rubbing. I had to do that with my 255's on a set of +40 17x8's.
    ~
    '97 GTP: 9.5:1 Diamonds, P&P Everything, XP, SSIC, GenV, Shiny Headers, 3.29's, HPTuners, E85

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    Get off my damn lawn! Bio248's Avatar
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    Default Re: Maximum width on Gp

    youre going to have to roll your fenders. i ran 19s with 245/40/19 and they rubbed until i rolled my fenders. the offsets were nearly identical.

    the 255 series with the sidewall of 40 is where youre going to run into problems. because the tire is that wide with that much sidewall still youre probably going to rub the fenders, but if you roll them to get them out of the way of the travel of the wheel then im 90% sure they will fit without rubbing.

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    SE Level Member Dunes2006's Avatar
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    Default Re: Maximum width on Gp

    thank you very much for the information

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    Get off my damn lawn! Bio248's Avatar
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    Default Re: Maximum width on Gp

    edited above post, i ran 245/40/19 tires.

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    SE Level Member Dunes2006's Avatar
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    Default Re: Maximum width on Gp

    thx a lot..i think i'm going to let it go and wait for 20's with 245 thx a lot

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    GTX Level Member imdaman3's Avatar
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    Default Re: Maximum width on Gp

    i got 20x9.5 +35offset with a 255/35/20 and i have kno rubbin on either of my gps

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    SE Level Member Dunes2006's Avatar
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    Default Re: Maximum width on Gp

    did you had a camber kit on it?

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    Get off my damn lawn! Bio248's Avatar
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    Default Re: Maximum width on Gp

    Quote Originally Posted by imdaman3 View Post
    i got 20x9.5 +35offset with a 255/35/20 and i have kno rubbin on either of my gps
    your suspension is either stock or lifted. youre experience with this stuff differs from many here as i promote lowering with wheels. in order to lower on wheels that size you have to run a stupid amount of negative camber and you probably wouldnt be able to get away with that tire size.

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    GTX Level Member imdaman3's Avatar
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    Default Re: Maximum width on Gp

    i have all stock suspension no rubing at all and im goin to lower both my gps and it still aint gona rub cus they sit in ,all you haft to do is call a rim shop theyll sell you a 255/30/20 bolt right on no probs, i actually have an account with wheelpros one of the best wheel specialist nationwide

    update: just got off phone with wheel pros, 97-03 gps 20x8.5 245/35/20 you can actually lower 1.75 not have any probs, 255/35/20 everyday driving can be lowered but rollin fenders like ^^bio stated is a must

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    Get off my damn lawn! Bio248's Avatar
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    Default Re: Maximum width on Gp

    thats ****ed up that theyd give you those specs and claim its true. i had pretty bad rubbing issues running 245/40/19 tires on my 19s with about +38mm offset. once i rolled my fenders they didnt rub anymore, but going lower offset than that or wider wheels with bigger tires sure as hell wont fit without rubbing. maybe its because my car was about 2.5" lower than stock, but even so they shouldnt just say they wont rub.

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    GTX Level Member imdaman3's Avatar
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    Default Re: Maximum width on Gp

    245/35/20 is the same 225/60/16
    Last edited by imdaman3; 03-01-2010 at 12:55 PM.

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    Get off my damn lawn! Bio248's Avatar
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    Default Re: Maximum width on Gp

    i know how tire size works, but its the width of the tire that makes the difference for rubbing. these fenders just dont have that much room unless you roll them.

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    GTX Level Member imdaman3's Avatar
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    Default Re: Maximum width on Gp

    mine are not rolled at all mine fit perfect call a tire shop theyll tell ya a 245/35/20 will fit with no rub and dudes silver one on here with 20s dont have any problems either gtinsc?

    ive been putin 20s on gps for over 10yrs now and never had to modify it unless ive put 22s 24s 26s

    now note: ive seen car that have been recked and fixed not fit properly

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    GTX Level Member imdaman3's Avatar
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    Default Re: Maximum width on Gp

    ima go check my et=back space on my rims to make sure tho

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    GTX Level Member imdaman3's Avatar
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    Default Re: Maximum width on Gp

    my bad my et on my 255/35/20s are +42 and my 245/35/20s are a +38

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    Get off my damn lawn! Bio248's Avatar
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    Default Re: Maximum width on Gp

    yeah, you probably couldnt run those 255s on the lower offset. wheel.

  20. #20
    GTX Level Member imdaman3's Avatar
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    Default Re: Maximum width on Gp

    usally wen i order wheels they ask me do i want a 245 or a 255 then i say what ones so in order to run a 255 wit no prob gota be a +42 and 245 +35-38

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