Automobile Engineering in ME
The correct way to rectify an imbalanced wheel is to

Attach appropriate weights to the wheel at appropriate positions
Adjust the tyre pressure
Rotate the tyres
Adjust the damper spring tension

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Automobile Engineering in ME
A worm gear is used as the pinion for the rack and pinion type of steering gearbox, because it

Allows the steering wheel to be turned by a greater amount when steering
Reduces the amount of kickback for large steering angles
Improves steering comfort when steering wheel is turned to effect small changes in the direction of forward motion
Makes the steering more responsive

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