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09-22-2009, 01:39 PM
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#1 |
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Registered User
Join Date: Jun 2009
Location: Midlothian, Virginia
Posts: 56
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Stock Tire Size
Can someone please tell me the stock tire size is for a 1/2 ton 1970 C-10? I have searched and cannot find it. I have two different size tires on my truck so I am not sure which is correct. Also I was wondering what load factor we should look for when looking for new tires?
Thanks |
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09-22-2009, 02:00 PM
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#2 |
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Registered User
Join Date: Dec 2006
Location: Porter Ranch, CA
Posts: 978
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Re: Stock Tire Size
Usually, they used a 9.5 x 15 (no profile back in the day). In today's standards, it's around a 235/75/15 I believe. Plus, unless you're going 100% stock, just get what fits, looks good and serves your purpose. If you're hauling enough to be concerned about load rating, you probably need a 3/4 ton, seriously. The tires today are pretty tolerant to any load you're going to put in that thing.
If you want to go slightly bigger, you should be able to run a 31 x 10.50 x 15 with little trouble. |
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09-22-2009, 02:07 PM
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#3 |
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Registered User
Join Date: Jun 2009
Location: Midlothian, Virginia
Posts: 56
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Re: Stock Tire Size
Thanks very much.
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09-22-2009, 05:17 PM
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#4 |
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optomistic ah-so
Join Date: Mar 2009
Location: Charlotte, NC
Posts: 544
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Re: Stock Tire Size
Mine apparently was equipped with L78-15's as delivered, but G's were supposedly the factory spec. The letter is supposed to indicate a load rating, but in order to reach that load rating the tire diameters changed as well. The closest in dimensions to a G78-15 would be the (P or LT)235/75R15 mentioned.
Gear ratios for the speedometer were not all that high of a priority back then, apparently. Coker tires' website is one place where you can find cross-reference charts for some tire sizes...anyone else know a few?
__________________
Rubbing is Racin' Ribbing is Bench Racin' 1970 C-10 lwb Fleetside. Originally 350 2-bbl 3-on-the-tree, m/b, m/w, m/s no a/c. Currently running on a '76 Camaro 305. 
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09-22-2009, 05:44 PM
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#5 |
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20' Daredevil (Ret)
 
Join Date: May 2003
Location: Jefferson State
Posts: 13,586
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Re: Stock Tire Size
I've seen others, but dunno where... Google found this:
http://66ford.fordregistries.com/Tir...0Reference.htm
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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09-23-2009, 12:21 AM
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#6 |
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70 Chevrolet=Obsession
Join Date: Jun 2009
Location: nice ca
Posts: 1,067
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Re: Stock Tire Size
I believe the most popular load rating for 1/2 tons back in the day was "D."
__________________
 I'm Just like my truck. Old, Ugly and Grouchy. Except my truck starts easily in the morning and doesn't smoke! IT'S NOT EASY BEING GREEN! -Kermit the frog 1970 Chevrolet C-10 Longbed Stepside : 350, Muncie M20, 3.08 GM corp. positraction Forest green exterior/light green interior(Where all my money goes) 1996 Toyota Corolla (Parts runner) |
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