Suspension and Chassis Questions about your suspension? Need chassis advice?

Anybody using 285/40/17's?

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Old Dec 15, 2005 | 09:22 PM
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bigdavesiroc's Avatar
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From: Owasso, OK
Car: 87 iroc
Engine: 410 sbc
Transmission: tremec 3550
Axle/Gears: 30 spline 3.73
Anybody using 285/40/17's?

i was planning on using 285's out back and 255/40's up front on 17x9 ss wheels. i wouldn't think there would be a problem with running 285's, but does anyone know??? using 2" spacer on all four corners. thanks, dave
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Old Dec 16, 2005 | 08:25 AM
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From: West Warwick RI, postal code: 02893
Car: Building LS3, T56 Z28
Engine: LS3
Transmission: T-56
Axle/Gears: Moser/ 4.11
I honestly have never herd anyone using that size. I have herd of 275, 295, 315......hell I am using 335.

What makes you want to use 285?
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Old Dec 16, 2005 | 08:07 PM
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From: Owasso, OK
Car: 87 iroc
Engine: 410 sbc
Transmission: tremec 3550
Axle/Gears: 30 spline 3.73
they are just slightly wider than the 275 (obviously) buy no taller. there are only a few tire makers who make them, goodyear has a couple, and i plan on using nitto's nt555's which has them in this size.
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Old Dec 21, 2005 | 11:31 PM
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From: Owasso, OK
Car: 87 iroc
Engine: 410 sbc
Transmission: tremec 3550
Axle/Gears: 30 spline 3.73
nobody???
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Old Dec 22, 2005 | 06:06 AM
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
we had them on the rear black GS wheels. they weren't really noticably wider or taller.





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Old Dec 22, 2005 | 08:19 PM
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From: Owasso, OK
Car: 87 iroc
Engine: 410 sbc
Transmission: tremec 3550
Axle/Gears: 30 spline 3.73
thanks for the reply. from the tirerack.com, it says the 285's are 26.1 where as the 275 are 25.7 inches tall?? but i know it's not like the difference between 275 and a 315 tire. but just a little.
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Old Dec 23, 2005 | 11:33 AM
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Car: 1989 Firebird
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why not run a 295/35?
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Old Dec 23, 2005 | 06:00 PM
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bigdavesiroc's Avatar
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From: Owasso, OK
Car: 87 iroc
Engine: 410 sbc
Transmission: tremec 3550
Axle/Gears: 30 spline 3.73
because i am talking about a 17 inch rim. not 18
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Old Dec 23, 2005 | 07:32 PM
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From: Kansas City
Car: 1991 Trans Am
Engine: L98
Transmission: T56
Originally posted by bigdavesiroc
because i am talking about a 17 inch rim. not 18
you can run a 295/35 on a 17 inch wheel. the 17x11 wheels typically run 315/35/17s on them.
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Old Dec 23, 2005 | 11:20 PM
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bigdavesiroc's Avatar
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From: Owasso, OK
Car: 87 iroc
Engine: 410 sbc
Transmission: tremec 3550
Axle/Gears: 30 spline 3.73
i don't like to start arguements. but there is no such tire, that is in a 295/35/17 but there is in a 18 inch rim. and yes 315 is a 35 series tire for 17's but too wide for anything less then a 10.5 inch wide rim. which just happens to be what i am using, 17 x 9. but thanks for trying to help.
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Old Dec 23, 2005 | 11:22 PM
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From: Owasso, OK
Car: 87 iroc
Engine: 410 sbc
Transmission: tremec 3550
Axle/Gears: 30 spline 3.73
thanks zepher. i appreciate the pics.
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Old Jan 15, 2006 | 10:43 AM
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From: Owasso, OK
Car: 87 iroc
Engine: 410 sbc
Transmission: tremec 3550
Axle/Gears: 30 spline 3.73
well i got some tires, and they fit wonderfully on the rims.
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Old Jan 21, 2006 | 12:43 PM
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From: Southern Maryland
Car: 91 Z28
Engine: L98
Transmission: built 700R4
Axle/Gears: 3.42
check out my cardomain page, I had those exact dimensions on the TT2s
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