Date:         Mon, 1 Nov 2004 11:20:48 -0700
Reply-To:     jimt <wetwesty@TACTICAL-BUS.INFO>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         jimt <wetwesty@TACTICAL-BUS.INFO>
Subject:      Re: Largest diameter wheel.
Comments: To: John Rodgers <inua@charter.net>
In-Reply-To:  <4185A584.3000904@charter.net>
Content-type: text/plain; charset="ISO-8859-1"

On 10/31/04 7:55 PM, "John Rodgers" <inua@charter.net> wrote:

> Here are the ply numbers for the XCA as read off the tire itself tonight.
> 
> Tread: Two plys of polyester, 3 plys of steel
> 
> Sidewall: Two plys of polyester
> 
> Pressure: 65 psi.
Look at the small numbers next to the rim for "ply rating" If it is on the
tire.  It will actually say "6 ply rated" or similar if it is there.  This
is an archaic rating that is not denoted by most mfr anymore.  For instance
my vredestiens read the same 2 and 3 but are rated a 6 ply load range c/d.
The ply term dates back to rayon plys.  Tire was rated by equivalents of
those plys.  Very few tires carry that rating on them anymore.

Below is from (Universal Tire Quality Grade) standards
UTQG
Ply Rating vs. Load Range
Ply ratings and load ranges identify load and inflation limits of a given
tire size when used in a specific type of service.

    * Ply ratings: An older method of rating load capacity, these are listed
as 4-ply, 6-ply, 8-ply, etc.
    * Load ratings: The current method of rating a tire's load-carrying
capacity is denoted by letters (B, C, D, E, etc.).


The yokohama site has this and more info
http://www.yokohamatire.com/ututqg.asp

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jimt
Planned insanity is best.
Remember that sanity is optional.
http://www.tactical-bus.info (tech info)
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