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: Driver Airbag (DAB) Module and Clock Spring Components and Components Location
Components
1. Driver Air Bag (DAB)2. Steering Wheel3. Clock Spring
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Hyundai Elantra AD (2016-2020) Owners Manual: Check Tire Pressure
â– Supervision cluster
You can check the tire pressure in the Assist Mode on the cluster. Refer
to the "LCD Display Mode" section in chapter 3.
A "Drive to display" message will appear for the first few minutes of driving
after initial engine start up. If the tire ...