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Ontario Class C Practice Test · Question

How often should a Class 4 driver check the tire pressure and tread depth?

Tire pressure and condition are critical for safety, fuel economy, and preventing blowouts during commercial operation. Friction in duals can cause fires if pre

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Question: How often should a Class 4 driver check the tire pressure and tread depth?

Answer options:

  • Once a month during the scheduled maintenance.
  • Only when the tire looks visually low on air. ✅ Daily, as part of your pre-trip inspection.
  • Every time you refuel the vehicle.

Correct answer: Daily, as part of your pre-trip inspection.

Explanation: Tire pressure and condition are critical for safety, fuel economy, and preventing blowouts during commercial operation. Friction in duals can cause fires if pressure is low.

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