Ford 1996 Taurus Manual page 207

The weight limits of your vehicle's tires affect
the GVWR or GAWR limitations. Usage of
replacement tires with higher weight limits than
originals does not increase GVWR or GAWR.
Usage of lower capacity replacement tires may
lower GVWR and GAWR limitations.
If the GVWR or the GAWR specified on
the Safety Compliance Certification Label
is exceeded, your vehicle may be damaged
or you may lose control and injure
someone.
Limiting Your Vehicle's Load
The load that you add to your vehicle must not
exceed the maximum load stated on the Safety
Compliance Certification Decal attached to the
left front door pillar.
To figure the weight of your vehicle's load, add
the weights of:
the driver and passengers
luggage and any other items that you put in
your vehicle
the tongue load of the loaded trailer
the weight of any equipment that has been
added to your vehicle since it was delivered
to your dealer
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