1. Move car to safe and even ground.
If you are changing a tire near oncoming traffic, move
the car onto a wide shoulder of the road. Turn the car's hazard lights on.
Park the car on level ground if able to prevent the car
from rolling when changing tires.
2. Apply parking brakes.
First shift the car into neutral, and slowly let go of
the brake. This may cause the car to roll forwards or backwards depending
on the level of the ground.
Then, slowly raise the parking brake until the car comes
to a full stop. This will reduce the strain of the transmission on the
wheels, preventing the car from rolling when in park on uneven ground.