If the tire is worn evenly, a tread wear indicator will appear as a solid band across the tread. This shows there is less than 2/32 inch (1.6 mm) of tread left on the tire. Replace the tire when this happens.
Do not wait for the tread surface to become level with the tread wear indicators before replacing the tire.
WARNING
To reduce the risk of DEATH or SERIOUS INJURY:
Compact spare tire replacement
A compact spare tire has a shorter tread life than a regular size tire. Replace it when you can see the tread wear indicator bars on the tire. The replacement compact spare tire should be the same size and design tire as the one provided with your new vehicle and should be mounted on the same compact spare tire wheel. The compact spare tire is not designed to be mounted on a regular size wheel, and the compact spare tire wheel is not designed for mounting a regular size tire.
WARNING
The original tire should be repaired or replaced as soon as possible to avoid failure of the spare and loss of vehicle control resulting in an accident.The compact spare tire is for emergency use only. Do not operate your vehicle over 50 mph (80 km/h) when using the compact spare tire.
Hyundai Elantra AD (2016-2020) Service Manual: Piston and Connecting Rod Repair procedures
Disassembly
Engine removal is required for this procedure.
•
Use fender covers to avoid damaging painted surfaces.
•
To avoid damaging the cylinder head, wait until the engine
coolant temperature drops below normal temperature before removing it.
•
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Hyundai Elantra AD (2016-2020) Owners Manual: Interior Care
Interior general precautions
Prevent caustic solutions such as perfume and cosmetic oil, from contacting the
interior parts because they may cause damage or discoloration. If they do contact
the interior parts, wipe them off immediately. See the instructions for the proper
way to clean vinyl. ...