For proper maintenance, safety, and maximum fuel economy, you must always maintain recommended tire inflation pressures and stay within the load limits and weight distribution recommended for your vehicle.

All specifications (sizes and pressures) can be found on a label attached to the driver's side center pillar.
Tires and Wheels
Recommended Cold Tire Inflation PressuresHyundai Elantra AD (2016-2020) Service Manual: Description and Operation
Description
BSD is a system that uses two magnetic wave radar sensors
attached on the rear panel to measure the distance from the following
vehicles and provides the sensing and (visual and auditory) alarm of any
vehicle coming into the blind spot.
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Blind Spot Detection (BSD) : Senses o ...
Hyundai Elantra AD (2016-2020) Service Manual: Troubleshooting
?Fault Diagnosis
Features a fail-safe mechanism that provides "limp-home" 4th
gear hold to enable the vehicle to be driven to the owner's home or
dealer shop.
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Fail-Safe : The TCM provides 4th gear hold and Reverse gear in the event of a malfunction.
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Lim ...