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Tire size? Brand?

This is a discussion on Tire size? Brand? within the GTO forums, part of the Vehicle Specific category; I have a set of Holden CV8-R 5 spoke 18"x8" (48mm offset) wheels coming from Australia. I will be using ...

  1. #1
    Junior Member Mich's04's Avatar
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    Cosmos Purple
    2004 GTO M6

    Tire size? Brand?

    I have a set of Holden CV8-R 5 spoke 18"x8" (48mm offset) wheels coming from Australia.
    I will be using the standard 235/40R18 up front. My question is...will a 275 be to large for the rear? Or should I stick with a 265/35R18 to be on the safe side?
    I don't want to get into rolling the rear fenders. I'm looking for the old school look of wide meats on the rear/skinny up front.

    What brand of tire do you guy's prefer?

    Thanks in advance!
    04 Cosmos Purple M6, SAP Grills & Spoiler, '05 Hood, Procharger, TrickFlow 515 HP H/C Kit, SLP LT Headers/LM II, '05 Big Red Brake upgrade, Drag bags, Holden CV8R wheels, GMM Ripshifter. Tuned by New Era: 515 rwhp/471 ft.lbs. Retuned by J&J Speed: Speed Density tuned 586rwhp/ 492 ft.lbs.

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    black
    2000 camaro

    i just recently purchased some new wheels for my 2000 z28. i went with the 18x8 in front and 18x9.5 in the rear. i was told by my tire distributor to run 245 45 in front and 275 40 in the rear. they told me that it wouldnt rub in the rear. and i could even do a 285 40.

    the tires that i am thinking of putting on are the goodyear eagle gt, or the eagle f1

  3. #3
    Army of 1 wooddaniel's Avatar
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    Quote Originally Posted by blk00ls1 View Post
    i just recently purchased some new wheels for my 2000 z28. i went with the 18x8 in front and 18x9.5 in the rear. i was told by my tire distributor to run 245 45 in front and 275 40 in the rear. they told me that it wouldnt rub in the rear. and i could even do a 285 40.

    the tires that i am thinking of putting on are the goodyear eagle gt, or the eagle f1
    18X10.5 with 305/35/18's barely rub on a T/A stock in the rear. In fact they only rubbed when turning extremely sharp at a high speed... I think the camaro is the same. You are safe up to 285/40

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    2-Legit-2-Quit bgable's Avatar
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    you'll be lucky to fit 265's without rolling fenders and or drag bags...i have drag bags and the fenders are rolled and i can barely squeeze 275's in, gto's have way less space then the fbodys
    2006 IBM GTO A4
    20% sides/rear 35% Windshield,SAP Repos,Ruff 278s Staggered 18s,LT's,Catless mids,Spintech Mufflers/X pipe,Torquer v.2,Vig3200 Stall,HPTuned,AEM CAI,SLP Thermostat,IAT relocate,BMR Drag bags, P4000DVD HU.

    2000 TA WS6 NBM A4 Full Bolt-Ons-Gone

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    Army of 1 wooddaniel's Avatar
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    Quote Originally Posted by gable2000ta View Post
    you'll be lucky to fit 265's without rolling fenders and or drag bags...i have drag bags and the fenders are rolled and i can barely squeeze 275's in, gto's have way less space then the fbodys
    Ahhhh. I thought they had a little more. I stand corrected

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    PBM
    2004 GTO

    265's max without rolling fender. If you have a stock suspension you will want to get drag bags or start thinking about new springs.

    If you go all out and trim the inner fender completely you can fit a 295 back there. A local guy was running those and we were all dumbfounded lol

  7. #7
    cutting and welding mark21742's Avatar
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    Quote Originally Posted by b15nut View Post
    265's max without rolling fender. If you have a stock suspension you will want to get drag bags or start thinking about new springs.

    If you go all out and trim the inner fender completely you can fit a 295 back there. A local guy was running those and we were all dumbfounded lol
    +1 I agree we have ALOT less wheelwell room than the f-bodies. I'm in the market for a 12" wheel and maybe a 335 for the back of mine, I'm running a full widebody. look around alittle, I remember seeing a good writeup on tire size in here awhile back( different manufacturers are actually different sizes)

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    I went to Playboy Mansion FantaZGuy28's Avatar
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    Any fbody/non gto driver don't even chime in. The gto's suck when it comes to wider rim/tire combination without having to roll the fender. I had mine rolled for 40 dollars, harmless procedure and you can't even tell they are rolled unless you look under the well. I'm running 18x9.5 with 275's and have no problem with rub out back. I have drag bags as well. Looks like you might have to bite the bullet if you wanna put wider tires on.

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    Veteran 0rion's Avatar
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    Quote Originally Posted by FantaZGuy28 View Post
    Any fbody/non gto driver don't even chime in. The gto's suck when it comes to wider rim/tire combination without having to roll the fender. I had mine rolled for 40 dollars, harmless procedure and you can't even tell they are rolled unless you look under the well. I'm running 18x9.5 with 275's and have no problem with rub out back. I have drag bags as well. Looks like you might have to bite the bullet if you wanna put wider tires on.
    how long has yours been rolled? I've read where people have had problems down the road with the paint cracking after getting them rolled. I would imagine that would depend on who did the work and their experience doing it.

    Does nitto make a 245 in 18's?

  10. #10
    Junior Member Mich's04's Avatar
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    Quote Originally Posted by 0rion View Post

    Does nitto make a 245 in 18's?
    Yup. Nitto NT555 has a 245/40 and 245/45R18 according to their web site.
    www.nittotire.com

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    Junior Member Mich's04's Avatar
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    Cosmos Purple
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    I will be running drag bags. But I think I'll stick with 265's for everyday driving. I might mount a set of 275 drag radials on 2 of the old 17" rims for occasional trips down the track.

    BTW, just bought a '08 G8 for a DD. Picking it up Thursday.

    So I was thinking of using the other 2 17" rims for snow tire duty this winter. I believe the GTO rims will fit a G8. But G8 rims won't fit a GTO. I will update the post when I try this out.

  12. #12
    cutting and welding mark21742's Avatar
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    Quote Originally Posted by Mich's04 View Post
    I will be running drag bags. But I think I'll stick with 265's for everyday driving. I might mount a set of 275 drag radials on 2 of the old 17" rims for occasional trips down the track.

    BTW, just bought a '08 G8 for a DD. Picking it up Thursday.

    So I was thinking of using the other 2 17" rims for snow tire duty this winter. I believe the GTO rims will fit a G8. But G8 rims won't fit a GTO. I will update the post when I try this out.
    dont talk about snow yet lol, I was down in southern VA the other morning and it was coming in so hard sideways you couldn't see 20 foot infront of you

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    Member PatrizioD's Avatar
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    Figured Id bring this back up, since I have a related question and this thread has good info...

    My question is.... Im looking at a new set of wheels/tires for the Goat for this summer; I dont drive that hard most of the time, and rarely hold a burnout for more than a second or two. I know, thats not a question, but keep reading....
    Ive done some THOROUGH shopping and think I've finally decided on a set of Quantum Tek Qt110's in 18x8 with a set of Nitto Nt555 in 225 40R18 size. Am I going to notice a difference in traction/performance over the stock 17s with 245 45R17s? Also, since Im going with almost an inch less width, will I need a lot of adjustments to alignment? Thanks in advance for the help!

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    Junior Member MNGTO's Avatar
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    Cant comment on the traction, but your alignment may change a little if at all. Not a bad idea to get it checked though.

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    Smiles for 9.5 Years cammed goat's Avatar
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    Quote Originally Posted by PatrizioD View Post
    Figured Id bring this back up, since I have a related question and this thread has good info...

    My question is.... Im looking at a new set of wheels/tires for the Goat for this summer; I dont drive that hard most of the time, and rarely hold a burnout for more than a second or two. I know, thats not a question, but keep reading....
    Ive done some THOROUGH shopping and think I've finally decided on a set of Quantum Tek Qt110's in 18x8 with a set of Nitto Nt555 in 225 40R18 size. Am I going to notice a difference in traction/performance over the stock 17s with 245 45R17s? Also, since Im going with almost an inch less width, will I need a lot of adjustments to alignment? Thanks in advance for the help!
    Well, since the 05/6 GTOs came with 235/40/18 I don't see any traction compromises. But I WOULD advise having an alignment check to keep your wallet full in the long run.

  16. #16
    Veteran 0rion's Avatar
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    why go to a tire with less tread patch?

  17. #17
    Smiles for 9.5 Years cammed goat's Avatar
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    Quote Originally Posted by 0rion View Post
    why go to a tire with less tread patch?
    I'm thinking package deal. We need more info.

  18. #18
    Member PatrizioD's Avatar
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    Indeed it is a package deal, one I found online. After searching a lot, I managed to find a pretty good price, so I'd like to stick with it. All the tires offered for the GTOs on 18x8's are 225s on most sites though.

    Edit: Duhr, Im an idiot. Looking farther down the page it has 225 and 235 options. I think Ill choose the 235/40R18's instead of the 225's... Thanks for the help guys. BTW, what think you of my choice of rims for a PBM 2006 GTO?
    Last edited by PatrizioD; 02-15-2009 at 11:54 PM.

  19. #19
    Veteran 0rion's Avatar
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    I like 'em. Good luck on keeping those creases and corners clean though.

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    cutting and welding mark21742's Avatar
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    Quote Originally Posted by 0rion View Post
    I like 'em. Good luck on keeping those creases and corners clean though.
    I agree, those are nice looking wheels

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