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Re: [GMCnet] Chart with tire outside diameters [message #301260]

Sun, 29 May 2016 20:03

Tom Whitton

Messages: 235
Registered: February 2004
Location: Paducah, KY

Karma: 0

Senior Member

I am having a small verbal disagreement about tire OD's and can't find a chart that shows tire outside diameters. Where can I find one?

Appreciate your help.

Tom Whitton
26 foot updated GMC
Paducah, KY
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Re: [GMCnet] Chart with tire outside diameters [message #301261 is a reply to message #301260]

Sun, 29 May 2016 20:16

pjburt

Messages: 436
Registered: February 2016
Location: Fresno, California

Karma: 1

Senior Member

Try this.
http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=7

Jerry Burt Fresno, CA.
73 Gmc 26' Canyon Lands
Members: FMCA - GMCMI - GMCWS
A truly happy person is one who can enjoy the scenery on a detour.

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Re: [GMCnet] Chart with tire outside diameters [message #301268 is a reply to message #301260]

Mon, 30 May 2016 05:48

Chris Tyler

Messages: 458
Registered: September 2013
Location: Odessa FL

Karma: 7

Senior Member

Here is what I use:

http://www.rimsntires.com/specspro.jsp

Mind you individual tire deminsions vary by the manufacturer

76 Glenbrook

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Re: [GMCnet] Chart with tire outside diameters [message #301279 is a reply to message #301260]

Mon, 30 May 2016 09:31

Tom Whitton

Messages: 235
Registered: February 2004
Location: Paducah, KY

Karma: 0

Senior Member

Using the Tire Rack chart and another that I found, here's what I calculate:

875-16 1/2 tire OD is 29.4 inches, divided by two, the radius is 14.7 inches
225/75R16 tire OD is 29.5 inches, divided by two, the radius is 14.75 inches

These calculations are a little different from yours, Dave Mumert, but the conclusion is the same, the difference in the radius of the two tires is minimal so the ride height recommendations in the manual are still good.

Thanks all,

Tom Whitton
26 foot updated GMC
Paducah, KY

Message: 2
Date: Sun, 29 May 2016 19:16:57 -0600
From: Jerry Burt
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Chart with tire outside diameters
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Try this.
http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=7
--
Patti & Jerry Burt
73 Gmc 26'
Photos - http://jburt.smugmug.com/GMC-Motorhome
Lots of upgrades but lots to do to make it ours.
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