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Difficulty: MediumWheels and Tires

A vehicle is equipped with directional (unidirectional) tires that have arrows molded into the sidewalls indicating the required forward rotation direction. When performing a routine tire rotation on this vehicle without dismounting the tires from their wheels, what is the correct procedure?

  1. A
    Cross the front tires diagonally to the opposite rear positions and move the rear tires straight forward.
  2. Swap the front tires straight to the rear and the rear tires straight to the front on the same side of the vehicle.Answer
  3. C
    Switch the left and right tires across the same axle while keeping them at the same end of the vehicle.
  4. D
    Move both rear tires diagonally to the opposite front positions and cross the front tires diagonally to the rear in a full X-pattern.

Answer

Swap the front tires straight to the rear and the rear tires straight to the front on the same side of the vehicle.
Directional tires have a tread pattern designed to operate in a single direction of rotation, indicated by an arrow on the sidewall. When rotating directional tires without dismounting them from the wheels, they must remain on the same side of the vehicle (front-to-rear and rear-to-front) so that their direction of rotation does not change.

Step-by-Step Solution

1
Identify the specific tire construction and tread type from the sidewall markings.
The tires are directional, meaning the tread pattern is engineered to rotate efficiently in only one direction.
Directional tread grooves are angled to evacuate water and maintain road grip exclusively when rolling forward as indicated by the sidewall arrow.
2
Determine the allowable rotation path without dismounting the tire from the rim.
Tires must stay on the same side of the vehicle (left-front to left-rear, right-front to right-rear).
Moving a mounted directional tire across to the opposite side of the vehicle causes it to rotate backward during forward driving, degrading traction and wet-weather performance.

Key Concept

Directional tire rotation patterns and maintenance constraints
Estimated Time:1m 0s
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Topics

Wheels and Tires

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