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billintreefiddy t1_j6z2imc wrote

Nitrogen

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nobbyv t1_j7024mt wrote

Nitrogen-filled tires still drop pressure as temps drop.

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ThisIsNotTuna t1_j71sdeg wrote

Not to mention the fact that "normal" air is already mostly nitrogen anyway, so...this point is moot.

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billintreefiddy t1_j702jpy wrote

Not nearly as much. I’ve had my truck a year with nitrogen and they’ve only fluctuated 1-2 psi.

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nobbyv t1_j704tx7 wrote

It’s true they don’t drop as much. They still drop enough to be significant. Nitrogen filled tires drop pressure by 1.9% for every 10F drop in temperature. A tire filled to 35PSI at 90F will be down almost 7PSI at the -10F temps we will see on Saturday. If you’ve only noticed a 1-2PSI change over temp, you’re either not driving it during wide temp fluctuations or are not paying attention.

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billintreefiddy t1_j704x5o wrote

It simply is true. It’s a 2022 vehicle and I leave the tire pressure up on display at all times.

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nobbyv t1_j71m5uv wrote

Ah. I see. Then your truck must exist in a realm that uses a different set of physics than the ones we use here.

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GreatGrandaddyPurp t1_j718ygt wrote

The air is 78% nitrogen. You're getting scammed lol.

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ThisIsNotTuna t1_j71skky wrote

Sure are. I have a theory that car dealerships don't want more folks to start buying their own air pumps. Because....profit.

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technogeek61 t1_j71ek3o wrote

78% of the air on Earth is nitrogen (and it is free and does not require any special filling station). Does the last 22% make that much more of a difference?

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jjmenace t1_j6z5zo0 wrote

Came here to say this. It sometimes costs money and sometimes it's hard to find but it's a huge tire saver.

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GreatGrandaddyPurp t1_j72ypxq wrote

I have a bridge in Brooklyn for sale. Would you be interested in purchasing it?

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jjmenace t1_j72z7uh wrote

Lol. I've done it for years and I've had some great results. 80k miles on a set of tires in New Hampshire. I also drive 100miles a day year round and never had to adjust the pressure once

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