Class 4 Practice

Results

#1. If you reduce a tire’s air pressure when it is warm,

(a) you will reduce the chances of the tire bursting.

(b) you may cause excessive flexing of the tire.

Both (a) and (c) are true.

When tires get warm, the air pressure increases. However, relieving that extra pressure may leave the air pressure too low when the tires cool again. Then the tires will tend to flex more, which can generate so much heat that the tires overheat. If your tires are too hot to touch, stop until they have cooled down.