Ford 1997 Aerostar Manual page 179

Do not let the added driving traction of
E-4WD lead you to believe that you can stop
any quicker than a conventional two-wheel
drive vehicle. The added traction performance
does not improve the braking ability of the
E-4WD vehicle. Allow the same amount of
distance when braking as with a two-wheel
drive vehicle.
Your E-4WD Aerostar is a passenger
vehicle designed for on-road use; it is not
intended for any off-road use.
On-vehicle wheel balancing will cause
damage to the drivetrain of E-4WD
Aerostars.
Driving With a Heavy Load
There are limits to the amount of weight your
vehicle can carry or tow. The total weight of
your vehicle, plus the weight of the passengers
and cargo, should never be more than the Gross
Vehicle Weight Rating (GVWR). Also, the weight
that your vehicle carries over the front axle and
rear axle should never be more than the Gross
Axle Weight Rating (GAWR) for the respective
axle.
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.
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