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Question

Difficulty: MediumTire Failure and Blowouts

When a front steer tire fails abruptly while traveling at highway speed, the primary handling symptom experienced by the driver is rear-end fishtailing rather than a heavy pull on the steering wheel toward the side of the flat tire.

Answer: Answer

Answer

False. Front steer-tire failure causes heavy steering wheel pull toward the deflated tire, while rear-tire failure is characterized by vibration, thudding, and rear fishtailing.
The statement is false. A blowout on a front steer tire generates immediate drag on that side of the vehicle, pulling the steering wheel strongly in the direction of the blown tire. In contrast, rear-wheel tire failures (on drive or trailer axles) produce thumping noises, chassis vibration, and fishtailing or swaying of the rear end.

Step-by-Step Solution

1
Analyze the physical symptoms associated with commercial vehicle tire failures by axle position.
Steer-axle blowouts create strong asymmetrical drag that jerks the steering wheel toward the flat tire, whereas drive-axle or trailer-axle blowouts cause vibration, shuddering, and rear swaying.
Accurate symptom recognition enables the driver to apply the correct vehicle control technique immediately without misdiagnosing the failure.
2
Evaluate the statement against standard commercial driver emergency handling principles.
The statement incorrectly attributes rear-end fishtailing to a front steer-tire failure.
Rear fishtailing occurs when traction and lateral support are lost at the rear axles, not at the steer axle.

Key Concept

Differentiating symptoms of front steer-tire failure from rear-axle tire failure
Estimated Time:45s
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Topics

Tire Failure and Blowouts

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