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Old 07-07-2009, 07:58 PM   #1
austinstocker
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Original Tire Size for 1971 C-10??

Does anyone out there have an idea of the factory tire size on a 67-72 1/2 ton 2WD short wide box? I am looking at the lowering parts on LMC Trucks magazine showing how low the truck will end up from "factory" height. The problem being... My truck has shorter tires than original, causing it to already be lower.... but how much? Anything helps. Thanks.
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Old 07-07-2009, 08:04 PM   #2
72BlckButy
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Re: Original Tire Size for 1971 C-10??

If a factory spare would be the same, my factory spare was 8.25 X 15.

By the way.... to the board from Mid-MO!!!

And we need a few pics of your truck to ensure those factory looking tires will truly fit the overall look... oh heck, who am I kidding? We just love pics!!!
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1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6)
1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior)
2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package)

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Old 07-07-2009, 08:12 PM   #3
austinstocker
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Re: Original Tire Size for 1971 C-10??

Thanks, I'll look into that. I'll have to take some pictures of the truck. As it sits now... 1967 C-10, 454, muncie 4 speed, posi 3.73, lowered, but not correctly. main purpose behind my post. haha.
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Old 07-07-2009, 10:06 PM   #4
WorkinLonghorn
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Re: Original Tire Size for 1971 C-10??

Yeah,8.25x15/4PR (equivalent 205R15) was standard on C10s but there were a few options.
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Old 07-08-2009, 08:24 PM   #5
Truckism
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Re: Original Tire Size for 1971 C-10??

According to the SPID, my 70 long bed C-10 was equipped with a G78-15. It crosses to a 225/75-15. Looks a little small on a 5-1/2" rim so I may have gotten away with a 235.
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Old 07-08-2009, 08:27 PM   #6
72BlckButy
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Re: Original Tire Size for 1971 C-10??

Truckism... any more shots of your truck?
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1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6)
1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior)
2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package)
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Old 07-09-2009, 09:52 PM   #7
Truckism
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Re: Original Tire Size for 1971 C-10??

Quote:
Originally Posted by 72BlckButy View Post
Truckism... any more shots of your truck?
Follow linky. http://67-72chevytrucks.com/vboard/s...d.php?t=347614
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'03 2500HD Crew Duramax Allison
'70 Custom-10 LWB Fleetside
'69 C-10 SWB Fleetside 4X4 4-Speed
'72 VW Drag Car


BUILD THREAD: http://67-72chevytrucks.com/vboard/s...d.php?t=359544
MY RIDE: http://67-72chevytrucks.com/vboard/s...d.php?t=347614
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Old 07-10-2009, 06:52 AM   #8
72BlckButy
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Re: Original Tire Size for 1971 C-10??

Okay... now I remember your truck. Beautiful work!
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1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6)
1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior)
2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package)
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Old 07-14-2009, 07:06 PM   #9
austinstocker
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Re: Original Tire Size for 1971 C-10??

thanks for all your information. I think I am going to end up with 2 1/2" drop spindles in the front with stock springs and 4" drop springs in the back. I don't want to go too low. Plus I'm sure I will be much more happy with the ride.
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