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05-16-2013, 11:49 PM
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#1 |
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Registered User
Join Date: Sep 2012
Location: TX
Posts: 1,014
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Actual, factory tire size on my 87?
I can't seem to get a straight answer through all my searching. Did anyone buy one of these trucks new back in the day and see the actual, factory tire size? One guy will swear its one size, then someone else will come along and say its something else. Anyone know the truth?
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05-17-2013, 12:42 AM
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#2 |
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Registered User
Join Date: Sep 2009
Location: Beaverton, OR from WA State
Posts: 1,515
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Re: Actual, factory tire size on my 87?
On my SPID, for my '83 K2500 it is LT215/85R-16E.
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Devin 1983 GMC High Sierra 2500, 4x4, RC/LB, 400 S.B., SM-465, NP-208, Corporate 10 bolt & 9.5" 14 bolt 1996 GMC Sierra SLE 3500 DRW, 4x4, EC/LB, Vortec 454, NV-4500, BW-4401, AAM 925 & AAM 1050 1997 GMC Sierra SLT 1500 4x4, Z71/F44, EC/SB, Vortec 350 My Introduction with my '83s History New Daily, the '96 |
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05-17-2013, 12:49 AM
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#3 |
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Registered User
Join Date: Jun 2011
Location: Baytown TX
Posts: 2,219
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Re: Actual, factory tire size on my 87?
I worked in a tire shop in the late 80's and if the truck had 15x8in rallys on it, it had 235/75/15's on it. Not sure about the 15x6 steel wheels with hub caps but I want to say 205/75/15's on those.
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John 82 Chevy Silverado 350ci/TH350 
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05-17-2013, 02:39 AM
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#4 |
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Registered User
Join Date: Jul 2009
Location: washington
Posts: 4,178
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Re: Actual, factory tire size on my 87?
I believe it's going to depend on what options your truck has and what tires were ordered
Posted via Mobile Device
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377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511 |
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05-17-2013, 03:53 AM
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#5 |
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Registered User
Join Date: Sep 2012
Location: TX
Posts: 1,014
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Re: Actual, factory tire size on my 87?
Silverado, with the standard rally wheels. The ones with the center cap and the gold chevy logo in the middle, that so many of these trucks though out the 80's had. I do know that a lot of the people who run the stock tire size complain that they look too small for the trucks.
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05-17-2013, 07:35 AM
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#6 | |
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Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,178
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Re: Actual, factory tire size on my 87?
Quote:
I ordered my truck new and followed it down the assembly line; plus - I built about 3.5 million square bodies back in the day. If you flip through here it will show you all the tire/wheel combinations that were available for 1987: http://www.gmheritagecenter.com/docs...olet-Truck.pdf I orderd mine with the P235/75R15s, which is what is on it now. Also - if you tell us what the tire RPO codes is (..are...) on your SPID we can tell you what tires your truck came with. Lastly - if you want to spend $50 you can send your VIN to the GM Heritage Center archives and they can give you the actual invoice for your specific truck, which would include the tires ordered originally as well as all other RPO content (and prices). http://www.gmmediaarchive.com/?page=3 So - the factory information is out there. It shouldn't take much to get to the bottom of this great mystery. K  
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ Last edited by Keith Seymore; 05-17-2013 at 07:43 AM. |
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05-17-2013, 08:28 PM
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#7 |
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Registered User
Join Date: Jul 2011
Location: Calgary, Alberta
Posts: 153
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Re: Actual, factory tire size on my 87?
It will be 235/75/15.
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05-18-2013, 09:42 PM
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#8 |
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Registered User
Join Date: Jun 2008
Location: Moss Point,Ms.
Posts: 1,439
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Re: Actual, factory tire size on my 87?
I bought my 82,4x4,C-10 new(and still have it)
It came with 235's on it. My 85 Gmc has 225's on it. And,235's on my 77,C-10. How close to accurate your speedo is will tell if your tires are the right size.That is if your truck is original. Mike.
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05-18-2013, 10:13 PM
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#9 |
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Registered User
Join Date: Apr 2013
Location: Nor-Cal
Posts: 632
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Re: Actual, factory tire size on my 87?
I just bought my 38th square about 6 weeks ago and #37 two months before that. #38 is an 86 2wd c10 which had the original tires on it when i bought it.
237/75 - 15 on both of these as well as MANY of the previous trucks. even with the factory tire size on my truck, the speedo is still off 5MPH. -Izzy
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