Ontario Class F Practice Test · Question
When is the most accurate time to check the tire pressure on a commercial vehicle?
Tire pressure should always be checked when the tires are cold, as heat generated from driving increases the pressure and can lead to an inaccurate reading.
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Question: When is the most accurate time to check the tire pressure on a commercial vehicle?
Answer options:
- Immediately after a long highway trip
- When the tires are hot to see the maximum expansion ✅ When the tires are cold, before the trip starts
- Only if the tire looks visibly low on air
Correct answer: When the tires are cold, before the trip starts
Explanation: Tire pressure should always be checked when the tires are cold, as heat generated from driving increases the pressure and can lead to an inaccurate reading.
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