The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-08-2015, 03:16 AM   #1
E.D.75GMC
Registered User
 
E.D.75GMC's Avatar
 
Join Date: Aug 2013
Location: Calgary Alberta
Posts: 273
Original tires?

Does anyone have information on what kind of tires originally came on a 1975 C20? Brand, size, etc.
E.D.75GMC is offline   Reply With Quote
Old 11-08-2015, 03:17 AM   #2
E.D.75GMC
Registered User
 
E.D.75GMC's Avatar
 
Join Date: Aug 2013
Location: Calgary Alberta
Posts: 273
Re: Original tires?

Truck has original 16" rims I should mention
E.D.75GMC is offline   Reply With Quote
Old 11-08-2015, 03:53 AM   #3
andrewmp6
Registered User
 
Join Date: Jan 2009
Location: Louisville,Ky
Posts: 5,811
Re: Original tires?

Keith Seymore will know better then anyone else.
andrewmp6 is offline   Reply With Quote
Old 11-08-2015, 11:19 AM   #4
cadillac_al
Registered User
 
Join Date: Oct 2013
Location: Maine
Posts: 2,376
Re: Original tires?

7.50 x 16. Everybody switched to 235/85r16 radials shortly afterward
__________________
76 Chevy K20
76 GMC K15
77 Chevy C10
77 Chevy K10
cadillac_al is offline   Reply With Quote
Old 11-08-2015, 11:42 AM   #5
enaberif
Registered User
 
Join Date: Jan 2009
Location: Calgary, AB
Posts: 1,181
Re: Original tires?

Quote:
Originally Posted by E.D.75GMC View Post
Truck has original 16" rims I should mention
Pretty sure only Ks came 16.5 rims and the C series was 15s.

If a C came with 16.5 I would say that was an option. Is your SPID intact? That will tell you your tire size.
enaberif is offline   Reply With Quote
Old 11-08-2015, 02:27 PM   #6
jocko
Senior Member
 
jocko's Avatar
 
Join Date: Oct 2009
Location: Godley, TX
Posts: 17,975
Re: Original tires?

C20s and K20s could all be had with 16.5, it was stock for both. 16s were an option for a long time. Then 16s became stock at some point, don't know year, but I believe it was after 75. 15s were standard on C/K10 only - never on 3/4 ton trucks. 15s had 5 (71 and up C10) or 6 lug pattern (all K5/10).
jocko is offline   Reply With Quote
Old 11-08-2015, 08:13 PM   #7
bhc41051
Senior Member
 
bhc41051's Avatar
 
Join Date: Apr 2012
Location: Otway OH
Posts: 788
Re: Original tires?

According to the GM Heritage Center the standard tire was 8.75-16.5 with 9.50-16.5, 10.00-16.5 (not available on Stepsides) and 7.50-16's available as optional equipment.
bhc41051 is offline   Reply With Quote
Old 11-09-2015, 10:30 AM   #8
Keith Seymore
Registered User
 
Keith Seymore's Avatar
 
Join Date: May 2009
Location: Motor City
Posts: 9,226
Re: Original tires?

Brands were the usual suspects: Goodyear, Firestone, Uniroyal. Whatever was cheapest at the moment.

Tires are usually high on the list for cost reduction, because whatever savings you can net per tire you can multiply by 5 (usually, or 4 with no spare tire)*.

K

* or 6 or 7 for dual wheeled vehicles.
__________________
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/
Keith Seymore is offline   Reply With Quote
Old 11-14-2015, 09:25 PM   #9
esbstuff
Registered User
 
Join Date: Jun 2011
Location: St Robert, Mo
Posts: 730
Re: Original tires?

On a 1/74 C20 truck I bought today, it came with 7.50 / 16 C tube hwy tread tires...
esbstuff is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 12:08 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com