Ontario Class C Practice Test · Question
What is the minimum legal tire tread depth for most commercial vehicles on the front tires?
Low tread reduces traction, especially in wet or snowy conditions. Most commercial regulations require at least 1.5mm to 3mm depending on the axle and province.
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Question: What is the minimum legal tire tread depth for most commercial vehicles on the front tires?
Answer options:
- 0.5 mm.
- 0.8 mm.
- 1.2 mm. ✅ 1.6 mm.
Correct answer: 1.6 mm.
Explanation: Low tread reduces traction, especially in wet or snowy conditions. Most commercial regulations require at least 1.5mm to 3mm depending on the axle and province. 1.6mm is a standard minimum for many small commercial vehicles.
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