Recomended Tire Pressure - Kia Niro Forum
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post #1 of 11 (permalink) Old 07-25-2019, 02:50 PM Thread Starter
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Recomended Tire Pressure

What is the correct tire pressure for the Niro EV. The door sticker says 36. The dealer or manufacturer had them inflated to 48!
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post #2 of 11 (permalink) Old 07-25-2019, 03:58 PM
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Sticker is correct. Dealer should have adjusted them during the PDI. 48 is overkill and potentially dangerous depending on the tire.

Many however do run a bit higher than the sticker. I run 39 in mine to increase my EV range and mpg in my PHEV.


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post #3 of 11 (permalink) Old 07-25-2019, 04:25 PM
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Many manufacturers ship their vehicles with the tires massively overinflated. I have no idea why, but I've heard of it happening with European, Asian and American manufacturers. Yes, that's one of the things a dealer is supposed to check on the PDI (Pre Delivery Inspection), but from what I've heard it is overlooked often. When I picked mine up they were actually correct, so +1 for them!
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post #4 of 11 (permalink) Old 07-25-2019, 04:31 PM
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Shipped with high pressures to avoid tire damage during extended shipping and storage periods.
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post #5 of 11 (permalink) Old 07-25-2019, 07:42 PM
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I run 38 - 40 in front and a bit less in back.

Ran that with my Fusion Hybrid also.

Not too high to be dangerous, but just enough to help rolling resistance.
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post #6 of 11 (permalink) Old 07-26-2019, 04:26 PM Thread Starter
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Thanks everyone. I've reduced the tire pressure to 38 and will talk to the service manager to let them know they messed up.
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post #7 of 11 (permalink) Old 07-26-2019, 08:14 PM
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Dealers often miss checking the tire pressure on a new car prep. Guess where the lowest paid/trained employees work?

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post #8 of 11 (permalink) Old 07-26-2019, 09:23 PM
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At lots of places new car prep=cleaning the car. That's it.

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post #9 of 11 (permalink) Old 07-27-2019, 12:21 PM
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And the manufacturer even provides a PDI checklist that the dealer is supposed to follow. But yeah, they often hurry through the process.

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post #10 of 11 (permalink) Old 08-01-2019, 07:33 PM
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As a Mechanic, an overinflated tire is less dangerous than an underinflated tire. Reason being, sidewall flex. If the sidewall flexes too much, too much heat will generate, and the *potential* for a blowout is increased.

I've been maintaining 38 psi (cold) on all my vehicles for the past 20 years. Depending on ambient temperatures, the target *operating pressure* is about 42 psi (hot). You get nice, even wear across the face, and, yes, you're maximizing mpg.

The tires come overinflated from the factory for two reasons... 1) to prevent flat spots in the tires, and 2) to ensure the bead is properly seated.

You can safely maintain 38 psi with no issues... you'll never exceed the load rating with the Niro.
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