Quote:
Originally Posted by 8gv
The spare is used as a way of keeping the car up while moving the other tires around. The last movement frees the spare so it can go back to where it is stored on the car.
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Many cars have a mini spare or a full spare on a steel wheel that doesn't match the wheels on the car.
Personally, I just rotate them front to back every 10,000 miles or every other oil change.