Fisker Karma 2012 Owner's Handbook Manual page 123

Checking tire pressures
WARNING: Pressure checks should
only be carried out when the tires are
cold and the vehicle has been stationary for
more than three hours. A hot tire at or below
recommended cold inflation pressure is
dangerously under-inflated.
WARNING: If the vehicle has been
parked in strong sunlight or used in
high ambient temperatures, do not reduce
the tire pressures. Move the vehicle into the
shade and allow the tires to cool before
checking.
WARNING: Do not exceed the
maximum pressure stated on the
sidewall of the tire. Over-inflation could
cause the tire to fail suddenly.
Check the pressures when the tires are
cold. Air pressure increases in warm tires
and it only takes 1 mile of driving to warm
the tires sufficiently to affect the tire
pressures. If it is necessary to check the
tires when they are warm, you should
expect the pressures to have increased. Do
not let air out of warm tires in an attempt to
match the recommended cold tire
pressures.
Always inflate your tires to the pressures
recommended by Fisker Automotive even if
it is different from the maximum inflation
pressure information found on the tire itself.
For the correct tire pressures, refer to the
Tire and loading information label / vehicle
placard, page 8.17.
The following procedure should be used to
check and adjust tire pressures:
1. Remove the cap from the valve, then
firmly press the tire gauge onto the valve
and measure the pressure.
2. If required add air to reach the required
pressure.
3. Check the pressure by removing the tire
gauge and then re-attaching it. Failure to
remove and re-attach the gauge to the
valve could cause the gauge to show an
incorrect reading.
4. If the tire pressure is too high, remove
the gauge and allow air out of the tire by
pressing the center of the valve. Refit
the gauge to the valve and check the
pressure.
5. Repeat the process adding or removing
air as required until the correct tire
pressure is reached.
6. Refit the valve cap.
Note: It is an offense in certain countries to
drive a vehicle with incorrect tire pressures.
Tire valves
Keep the valve caps screwed down firmly to
prevent water or dirt entering the valve.
Check the valves for leaks when checking
the tire pressures.
Flat spots
If the vehicle is stationary for a long period,
when the ambient temperature is high, the
tires may form flat spots. When the vehicle
is driven, these flat spots will cause a
vibration which will steadily disappear as
the tires warm up and regain their original
shape.
Tire Care
8.5