Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 8 - Think and Discuss: 101

Answer

The speedometer reading will be low.

Work Step by Step

Oversize tires mean the car travels farther with each revolution of the tire. So the car will be moving farther with each rotation than the speedometer "thinks it should be" because the speedometer assumes that the factory tires are installed. The speedometer reading will be lower than the car's actual speed.
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