Practice question

How does tire inflation affect fuel efficiency?

  1. Fully inflated tires decrease mileage
  2. Under-inflated tires improve traction
  3. Properly inflated tires enhance fuel efficiency
  4. Over-inflated tires improve handling

Answer: C — Properly inflated tires enhance fuel efficiency

Properly inflated tires enhance fuel efficiency because they reduce rolling resistance, the force that opposes the motion of the vehicle. When tires are properly inflated, they maintain optimal shape and contact with the road, allowing for more efficient energy use. In contrast, under-inflated tires create increased rolling resistance, leading to greater energy consumption and ultimately lower fuel efficiency. Additionally, correctly inflated tires ensure better handling and overall safety while driving, contributing to more economical fuel use as drivers can control their vehicles more easily and avoid unnecessary fuel waste through erratic driving. Ultimately, staying mindful of tire inflation is not only important for saving fuel but also for prolonging tire life and enhancing overall vehicle performance.

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