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 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 10-30-2008, 09:46 PM   #1
hdflstf
Registered User
 
hdflstf's Avatar
 
Join Date: Oct 2007
Location: Desert Southwest
Posts: 540
Tire Diameter or Size Question 72 GMC 4x4 (stock)

I'm looking for what the original equipment tire diameter was on a 72 GMC 3/4T 4x4. I need to do some math to figure out how far off the speedometer is but I need to get the starting point...

TIA
hdflstf is offline   Reply With Quote
Old 10-30-2008, 10:15 PM   #2
Stocker
20' Daredevil (Ret)
 
Stocker's Avatar
 
Join Date: May 2003
Location: Jefferson State
Posts: 13,722
Re: Tire Diameter or Size Question 72 GMC 4x4 (stock)

May have been optional sizes... Should be the same as my '72 K20, though. It came with 7.50-16s, about 31.8" tall iirc. Armstrong Norsemans (traction) in that size were 32.2", again if my memory is correct.

A bit of searching indicates 265/75-16 may be close to the same diameter as the OEM bias-ply tires.

If you don't have them already, here's a couple of calculators:
http://www.discounttire.com/dtcs/infoTireMath.dos
http://www.miata.net/garage/tirecalc.html
__________________
- Mike -

1972 K20 LWB 350/350/205

RIP El Jay

Last edited by Stocker; 10-30-2008 at 10:28 PM.
Stocker is offline   Reply With Quote
Old 10-30-2008, 11:56 PM   #3
hdflstf
Registered User
 
hdflstf's Avatar
 
Join Date: Oct 2007
Location: Desert Southwest
Posts: 540
Re: Tire Diameter or Size Question 72 GMC 4x4 (stock)

Thanks. That gets me a start on how much my speedo is off.
hdflstf is offline   Reply With Quote
Reply

Bookmarks


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 08:27 PM.


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