Correct answer
Unequal braking effectiveness at the wheels of the same axle.
It may be due to unequal braking effectiveness at the wheels of the same axle. Pulling while braking can have several causes, including uneven wear or a brake fault, and needs professional inspection. It does not by itself establish that wheel alignment is the required repair. Engine oil does not directly regulate each brake, and cab ventilation does not change braking force.
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Unequal braking effectiveness at the wheels of the same axle.
Engine oil, which directly regulates pressure at each brake.
Cab ventilation, which changes braking force.
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