Something I have been doing for many years. If I need all the wheels off at one time (rotating, etc) I don't get under the car. If I am working on something under the car, I jack up one end of the car and place two old wheels (the wider the better) under the tires. The car can't move. I then jack up the other end and use two more wheels under the tires. If I am working on something where I will need to be under the car, and have two tires off the car, I still use the wheels under the other end of the car and jack stands under the end I am working on. The wheels keep the car from moving. You can usually find old wheels at any place that sells custom wheels. I paid a buck each for 4 wheels from an old Buick.

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84 500 SEL (307,xxx miles)