Kia Optima: Tires and wheels / Tire replacement

Kia Optima DL3 2019-2021 Owner's Manual / Maintenance / Tires and wheels / Tire replacement

If the tire is worn evenly, a tread wear Indicator (A) will appear as a solid band across the tread. This shows there is less than 1.6 mm (1/16 inch) of tread left on the tire. Replace the tire when this happens.

Do not wait for the band to appear across the entire tread before replacing the tire.

The ABS works by comparing the speed of the wheels. The tire size affects wheel speed. When replacing tires, all 4 tires must use the same size originally supplied with the vehicle. Using tires of a different size can cause the ABS (Anti-lock Brake System) and ESC (Electronic Stability Control) to work irregularly.

✽ NOTICE

Wheel alignment and tire balance
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 al ...

Wheel replacement
When replacing the metal wheels for any reason, make sure the new wheels are equivalent to the original factory units in diameter, rim width and offset. A wheel that is not the correct size may adv ...

Other information:

Kia Optima DL3 2019-2021 Owner's Manual: Transmitter precautions


The transmitter will not work if any of following occur: - The ignition key is in the ignition switch. - You exceed the operating distance limit (about 10 m [30 feet]). - The battery in the transmitter is weak. - Other vehicles or objects may be blocking the signal. - The weather is ext ...

Kia Optima DL3 2019-2021 Service and Repair Manual: Blower Motor


Repair procedures Inspection 1. Connect the battery voltage and check the blower motor rotation. 2. If the blower motor does not operate well, substitute with a known-good blower motor and check for proper operation. ...

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