Date:         Sun, 17 Jul 2011 06:04:53 -0700
Reply-To:     Jim Arnott <jrasite@EONI.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Jim Arnott <jrasite@EONI.COM>
Subject:      Re: understanding tire sizes
Comments: To: Harry Hoffman <hhoffman@IP-SOLUTIONS.NET>
In-Reply-To:  <4E22D51D.3000907@ip-solutions.net>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes

http://en.wikipedia.org/wiki/Tire_code

2 or 3 digit number: The "aspect ratio" of the sidewall height to the
total width of the tire, as a percentage. If the information is
omitted, it is assumed to be 82%. If the number is larger than 200,
then this is the diameter of the entire tire in millimeters.

On Jul 17, 2011, at 5:27 AM, Harry Hoffman wrote:

>
> Does this ratio somehow become unimportant in the 185s? Or is there
> only
> one ratio offered and that's why the shorthand?

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