Date:         Thu, 24 Apr 2003 11:55:03 -0500
Reply-To:     rodney.woten@LENNOXIND.COM
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Rodney Woten <rodney.woten@LENNOXIND.COM>
Subject:      Re: Max Load Rating Calculation
Content-Type: text/plain; charset=ISO-8859-1

How do the 93-102 load rating numbers, shown below, correspond to the A,B,C,D,E load ranges?????


Just curious,
Rod Woten
'87 Westy
Dews Moines, Iowa

-----Original Message-----
From: MIME :tjhannink@YAHOO.COM [mailto:MIME :tjhannink@YAHOO.COM]
Sent: Thursday, April 24, 2003 11:30 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Max Load Rating Calculation


> Exactly how do we get from GVWR or GAWR to the Load
> spec of 1609-1652lbs.

To get the load spec, take the highest axle's GVWR and
divide by 2. In your van that would be (3,042 lbs/2)
or 1,521 lbs.

A light truck or commercial tire needs to be rated for
at least that amount. No safety margin is required
since it is being used in the application it was
designed for.

> I know there is a safety margin figured in, but I'd
> like to know specifically how to do the actual math.

The load rating of a passenger car tires needs to be
reduced by 9% (divide by 1.1) for use in a light truck
application.
<http://www.yokohamatire.com/utinstallation.asp>
<http://www.tiresafety.com/size_class/size_nav4b.htm#ptire>

LR      Lbs.    9% derate
93      1433    1303
94      1477    1343
95      1521    1383
96      1565    1423
97      1609    1463
98      1653    1503
99      1709    1554
100     1764    1604
101     1819    1654
102     1874    1704