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Difficulty: MediumTires, Wheels, and Rims Inspection

Radial and bias-ply tires may be mounted together on the same axle of a commercial motor vehicle provided that both tires maintain identical tread depth and equal inflation pressure.

Answer: Answer

Answer

False
Commercial vehicle safety regulations strictly prohibit mixing radial and bias-ply tires on the same axle. Because radial and bias-ply tires possess distinctly different internal cord angles and sidewall flexibility, pairing them on the same axle creates uneven traction and vehicle control hazards.

Step-by-Step Solution

1
Identify the tire construction types and axle positioning specified in the statement.
The statement proposes mounting a radial tire and a bias-ply tire together on the same axle.
Commercial vehicle pre-trip inspection standards require verifying tire compatibility across every axle.
2
Evaluate regulatory requirements regarding mixing radial and bias-ply tire construction types.
Safety standards explicitly prohibit mixing radial and bias-ply tires on the same axle regardless of tread depth or air pressure.
Radial and bias-ply tires deflect and grip differently under load, creating dangerous handling disparities and dynamic instability.
3
Determine the truth value of the statement.
The statement asserts that mixing these construction types is permitted under certain maintenance conditions, which is incorrect.
The prohibition on mixing radial and bias-ply tires on the same axle is absolute.

Key Concept

Tire Construction Compatibility on Commercial Vehicle Axles
Estimated Time:1m 0s
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Topics

Tires, Wheels, and Rims Inspection

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