Dennis, just found this:
http://www.roadhaus.com/tires/load.html

On Mon, Oct 30, 2017 at 5:03 PM, kenneth wilford (Van-Again) <
kenwilfy@comcast.net> wrote:

> Dennis, this is very interesting to me.  Maybe you could start making up
> charts of real empty weights of Vanagon campers, and then the figure out
> how much usable weight is left over for people and stuff?  This would be
> helpful to see if they are overloading their vans.
>
> Ken
>
> On Mon, Oct 30, 2017 at 1:26 PM, Dan N <dn92610@gmail.com> wrote:
>
>> since I don't use tires type/size mentioned on the door jam, I use my rule
>> of thumb
>>
>> max. pressure on the side wall minus 8psi for the FRONT
>>
>> max. pressure on the side wall minus 4psi for the REAR
>>
>> tintop Syncro -  General Grabber AT2 27x8.5 LT14 - FRONT: 50-8=42psi /
>> REAR: 50-4=46psi
>>
>> if the van is heavy loaded I add 1 more psi to all tires. Really empty
>> (driver + passenger only) I subtract 2 more psi to all tires. I never put
>> in the max on the side wall, always leave some room for expansion.
>>
>
>
>
> --
> Thanks,
> Ken Wilford
> John 3:16
> www.vanagain.com
>

--
Thanks,
Ken Wilford
John 3:16
www.vanagain.com