The wheels on your vehicle were aligned and balanced carefully at the factory to give you the longest tire life and best overall performance.
In most cases, you will not need to have your wheels aligned again. However, if you notice unusual tire wear or your vehicle pulling one way or the other, the alignment may need to be reset.
If you notice your vehicle vibrating when driving on a smooth road, your wheels may need to be rebalanced.
NOTICE
Improper wheel weights can damage your vehicle's aluminum wheels. Use only approved wheel weights.
Tire Rotation
Tire ReplacementHyundai Elantra AD (2016-2020) Service Manual: Input Speed Sensor Specifications
Specifications
? Type: Hall effect sensor
? Specifications
ItemsSpecificationsOperation condition [°C(°F)](-40 ~ 150) -40 ~ 302Output voltage(V)High1.18 ~ 1.68Low0.59 ~ 0.84
...
Hyundai Elantra AD (2016-2020) Owners Manual: Head Restraints
The vehicle's front and rear seats have adjustable head restraints. The head
restraints provide comfort for passengers, but more importantly they are designed
to help protect passengers from whiplash and other neck and spinal injuries during
an accident, especially in a rear impact collisi ...