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275's don't fit. What do I do?

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Old Mar 23, 2013 | 12:30 AM
  #1  
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275's don't fit. What do I do?

Hey guys so today I inherited some Weld Draglites from my dads GTO. Rear is 15x8.5 and front is 15x5. The fronts fit no problem. The rear 275's are too wide and hit the bump stop. The guy at the shop told me to get 235's instead. Isn't that a little narrow for an 8.5" wide wheel? Should I go with 245's or 255's? Any other opinions? Thank you very much guys!
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Old Mar 23, 2013 | 12:34 AM
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From: Laredo, TX
Car: 1991 Camaro Z28
Engine: 350ci TPI
Transmission: built 700r4
Axle/Gears: 4th gen rear end
Re: 275's don't fit. What do I do?

are you running stock diff? whats the backspacing on the wheels?
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Old Mar 23, 2013 | 12:50 AM
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Re: 275's don't fit. What do I do?

Originally Posted by robg91z
are you running stock diff? whats the backspacing on the wheels?
Yes it's the stock diff. The wheels came with the GTO that he got a month ago so I don't know what the back spacing is since I didn't purchase them myself.
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Old Mar 23, 2013 | 01:53 AM
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Ron U.S.M.C.'s Avatar
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From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: 275's don't fit. What do I do?

Without knowing the BS its hard to guess and the shop should have been able to tell you it.
Some shops will mount a old tire in the size you want on your wheel then just put it on and see how it fits.I run 255/60r15s rear on a 8in. wide wheel and love them.
Here's a way to measure.

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Old Mar 23, 2013 | 07:36 AM
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Re: 275's don't fit. What do I do?

Originally Posted by ronusmc
Without knowing the BS its hard to guess and the shop should have been able to tell you it.
Some shops will mount a old tire in the size you want on your wheel then just put it on and see how it fits.I run 255/60r15s rear on a 8in. wide wheel and love them.
Here's a way to measure.

Thank you for this. Ill measure them today.
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Old Mar 23, 2013 | 07:54 AM
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From: Rockledge, PA
Re: 275's don't fit. What do I do?

You have to have a wheels with the wrong backspacing, I've had 255/60-15, 275/60-15 and 295/50-15 on my car without any problems. I'm currently running 295/50-16's with no issue.
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Old Mar 23, 2013 | 08:00 AM
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From: alliance, ohio
Car: 1984 chevy camaro
Engine: 355
Transmission: turbo 350 2800 stall
Axle/Gears: 3:73 detroit locker posi
Re: 275's don't fit. What do I do?

i agree wrong backspacing. i have 275/60/15 on my and they fit perfect
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Old Mar 23, 2013 | 01:18 PM
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From: Charlestown, IN
Car: 1971 Camaro
Engine: 427
Transmission: TKO600
Axle/Gears: 3.73
Re: 275's don't fit. What do I do?

Yep, wrong back spacing. If you really want to run them, get some spacers.
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Old Mar 23, 2013 | 01:19 PM
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From: Charlestown, IN
Car: 1971 Camaro
Engine: 427
Transmission: TKO600
Axle/Gears: 3.73
Re: 275's don't fit. What do I do?

And for the guy that said you need 235's IROCS came with 245's from the factory.
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Old Mar 24, 2013 | 12:27 AM
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From: Bremen KY
Car: 1985 firebird
Engine: 360"sbc NA pump gas
Transmission: Th350 manual valve body
Axle/Gears: Moser 12 bolt 4.11:1
Re: 275's don't fit. What do I do?

Have 15x10" with Hoosier 275 60's and a 5.5" backspace also perfect fit.
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