Technician A says that inflation pressures vary with outside temperature. Technician B says that under-inflated tires cause reduced fuel economy. Which technician is correct?

Question

Quizplus · Accepted Answer

Both statements are correct. Tire pressure does indeed vary with changes in outside temperature, typically decreasing in colder weather and increasing in warmer weather. Under-inflated tires increase rolling resistance, which in turn reduces fuel economy.

Technician a Says That Inflation Pressures Vary with Outside Temperature