Volks,

I'd like to better understand how we get to the Maximum Load Rating Tire
recommendations for our Vanagon.

Example, the generally agreed upon Vanagon Tire specification is: Load
Index: 97 (1609-1652 lbs.) or Higher

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

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

My 1990 Syncro Westfalia has the following load specifications.

GVWR LB 5512
GAWR LB Front 2866 / Rear 3042

GVWR (Gross Vehicle Weight Rating):
The Maximum permissible weight of the unit, including
the Unloaded Vehicle Weight plus all fluids, cargo,
optional equipment and accessories. For safety and
product performance, do not exceed the GVWR.

GAWR (Gross Axle Weight Rating):
The total weight each front/rear axle, suspension
 and tire system is designed to carry. When loading
the unit, care should be taken to balance cargo
weight in consideration of the GAWRs.

Thanks,

Larry Chase
Email: RoadGuy@RoadHaus.com
Web: www.RoadHaus.com
What: North American Road Trip
How: RoadHaus - 1990 VW Westfalia Syncro
Today: Denver, CO