View Full Version : Whats the biggest rear tire that will fit a GTO?


1QuickT-A
05-12-2010, 11:09 PM
What is the biggest tire that will fit on a stock 17" GTO wheel? Are you guys running 275s with no rubbing issues? What rear coil spring...stock or?

Also what drag wheel fits the best on the rear? 15x8 or 15x10 and what back spacing? Can you get a 26x10.5" slick under it?

I don't know jack crap about the wheel/tire/suspension combos that everyone runs on these cars for drag use. I'm an fbody man! lol So help me out please! Thanks

Mikey340
05-13-2010, 12:00 AM
Check out ls1gto.com more info than you'll ever need!
I have 285's but it's on a 19x10

GT-OH
05-13-2010, 06:53 AM
I have 275's with stock springs but I had to role my fenders.

badpontiacs
05-13-2010, 02:42 PM
15x8 = 5.5bs and 15x10 = 7.5bs....same as an F-body. 275/50/15 by hoosier fits very well. Tou will have to roll/cut the rear fenders and possibly cut the shock sleave off, along with slight modification to the inner front area of the fender well (on the rear). I had to do all of that running a 275/50/15 M/T drag radial. Also, its a good idea to get drag bags. I cant remember for sure but I think a 26.0-10.5-15 bias-ply will fit too.

1QuickT-A
05-13-2010, 04:27 PM
15x8 = 5.5bs and 15x10 = 7.5bs....same as an F-body. 275/50/15 by hoosier fits very well. Tou will have to roll/cut the rear fenders and possibly cut the shock sleave off, along with slight modification to the inner front area of the fender well (on the rear). I had to do all of that running a 275/50/15 M/T drag radial. Also, its a good idea to get drag bags. I cant remember for sure but I think a 26.0-10.5-15 bias-ply will fit too.

Ok cool thats what I had heard but I wasnt sure. Thanks for the info. We have the fenders cut/rolled now so the 275/40/17s should fit now.

Thanks again.

WS6sinner
05-21-2010, 05:15 PM
I have 275's with stock springs but I had to role my fenders.

+1 running 275 M/Ts on stock 17s, fenders rolled, stock springs...no rubbing issues.

JAX04
05-23-2010, 08:21 AM
nitto 555r drag radial, 275/40/17 stock everything, didnt even roll fenders, two people in back seat, and she still doesn't rub when the slam the gas from a dig.

v8
05-23-2010, 07:02 PM
I run mickey thompson etstreets 26x11.5x17 on 17x9 rims with the fenders rolled.

I have 275x35x18 on the back, soon to be 285x30x19's

SIC GTO
05-23-2010, 07:06 PM
I fit 275's without a problem on stock wheels and suspension.

old_goat
05-23-2010, 09:58 PM
I fit 275's without a problem on stock wheels and suspension.

+1

I ran two different sets of Nitto 555's, 275's and never had to roll the fenders.

402GOAT
05-24-2010, 12:03 AM
I run mickeys 275 40 17 on my stock wheels with bags in the rear at 8lbs with no rubbing. I cut a 1.5 sixty foot on them with no problems.

GF7PE
05-24-2010, 08:19 PM
i cant see how its possible. Put it on the lift yesterday took the wheel off and put a 275/35/18 on a tranny lift and put it in place. It looked as if the tire would be almost flush with the rear quarter. If this is the case, when I accelerate I would rub for sure.

comments?

JAX04
05-24-2010, 08:22 PM
i cant see how its possible. Put it on the lift yesterday took the wheel off and put a 275/35/18 on a tranny lift and put it in place. It looked as if the tire would be almost flush with the rear quarter. If this is the case, when I accelerate I would rub for sure.

comments?


easy, when you put it up on the lift, the wheels fall down and out, giving it the illusion that they will be flush with the fenders, (IRS) when you set it back down, they will go up and in :)

GF7PE
05-24-2010, 08:50 PM
man it doesnt look like it will fit even on the ground. maybe I'll mount one and give it a try. Will only take a few min after all

01ws6m6conv
05-24-2010, 10:16 PM
I ran 275/40/17 nitto drag radials on mine,but did roll the quarters.

GTO Jimbo
05-25-2010, 12:57 AM
I've heard different tire brands tend to run wider. People have no problems running 275 nittos but have trouble with 275 M/T's.

At the very least I plan on rolling my fenders before I throw my M/T's on for summer. (stock 17's)

socal gto
05-25-2010, 11:17 AM
I had 275 m/ts and they rubbed for me.

enraged350z
05-26-2010, 06:40 AM
FYI Notto's are more narrow than most tire co's and thats why a 275 will fit under the rear. There is a nice post about this on ls1gto.

socal gto
05-26-2010, 11:18 AM
^^^I agree with. My 255-40-17 bfgs I used to run were as wide as a nitto 275-40-17

402GOAT
05-26-2010, 03:51 PM
You can run 275 40 17's micky thomp on these cars people. I'm doing it right now on the stocker 17's. You must run drag bags though. Drag bags will probably bee needed to control wheel hop anyways so spend the 100 bucks and geta set. You can put them in yourself if you got basic mechanical skills.

The only time I have rubbed my fenders was when I let all the air out of the bags. I always run 8 lbs in then on the street. I recently put 10 in them to see what would happen. The car cut a 1.56 sixty foot. I now run 10 at the track and 8 on the street.

Get mickys not nittos. Nittos suck for racing but great for mileage. Veery stiff sidewalls.

GTO Jimbo
05-26-2010, 05:09 PM
^
402 did you have to roll your fenders at all?

youngrigo
05-26-2010, 05:13 PM
My brother is running a 285/30/19 on his GTO and its slightly lowered

402GOAT
05-26-2010, 10:43 PM
^
402 did you have to roll your fenders at all?

Nope my fenders are just as they come. My cradle is straight too though. If your cadle is off you would only rub one side if you don't have bags. With bags you won't rub though.

ghettoSi
05-28-2010, 12:06 AM
:pics:

402GOAT
05-28-2010, 04:11 AM
http://i691.photobucket.com/albums/vv273/402goat/a353d216.jpg
http://i691.photobucket.com/albums/vv273/402goat/c7dc0d7b.jpg
http://i691.photobucket.com/albums/vv273/402goat/a05a8ebe.jpg
http://i691.photobucket.com/albums/vv273/402goat/b248e00d.jpg

sorry for the shhtty pics. My car is on Jack stands right now cause of an unexpected trans issue. But u can that they are mt's 275 40 17 on factory wheels with bags installed.

And here is a time slip
http://i691.photobucket.com/albums/vv273/402goat/9a1c20e6.jpg

ghettoSi
05-28-2010, 04:18 AM
Get a shot from the rear when it's on the ground!

6.0monsta
05-28-2010, 09:21 AM
[/IMG]

What mods did you have on the 6.8@103 run?

tom's2005gto
05-28-2010, 09:45 AM
315's

http://i85.photobucket.com/albums/k63/camarob4c/my%20mini%20tub/johnspic.jpg

http://i85.photobucket.com/albums/k63/camarob4c/my%20mini%20tub/DSCN1083-2.jpg

http://i85.photobucket.com/albums/k63/camarob4c/my%20mini%20tub/rearendshot.jpg

nick.celis
05-28-2010, 08:04 PM
315's

http://i85.photobucket.com/albums/k63/camarob4c/my%20mini%20tub/johnspic.jpg

http://i85.photobucket.com/albums/k63/camarob4c/my%20mini%20tub/DSCN1083-2.jpg

http://i85.photobucket.com/albums/k63/camarob4c/my%20mini%20tub/rearendshot.jpg

that...looks sick. id love to be able to fit 315s on mine haha.

tom's2005gto
05-28-2010, 08:28 PM
stop by, it can be done

402GOAT
05-28-2010, 08:48 PM
What mods did you have on the 6.8@103 run?

402 forged, l92's, fast 102mm, and 150 shot. And several more things but you get the pic.

ghettoSi
05-28-2010, 11:02 PM
315's
:headbang:

GF7PE
05-29-2010, 07:32 PM
Ok... Finally got around to trying a 275/35/18. It does fit but man did the side wall look terrible. I think I'll pick up a pair of 245/40/18 et streets until I get around to buying an aftermarket set

p.s. Sure enough I ended up scratching a wheel in the process. Man that tire was a bitch to put on.

GTO Jimbo
05-30-2010, 11:12 PM
Holy chit at those 315's. WANT! :drool: