Home › CDL Practice Tests › General Knowledge Questions › Question 317
When is the correct time to check tire pressure for an accurate reading in hot weather?
- A.Immediately after 200 highway miles
- B.After bleeding air from a hot tire
- C.When the tire is cold, before driving or after sitting at least several hours, not right after a long hot run
- D.Only at noon on the hottest day
Correct answer
C. When the tire is cold, before driving or after sitting at least several hours, not right after a long hot run
Why
Driving raises pressure as the tire heats, so a hot reading hides true underinflation. Never bleed air from a hot tire to reach the recommended cold pressure, because it will be underinflated once it cools.
Manual topic: Hot Weather - Pressure · From the General Knowledge practice bank (GK-317).