yeditityet

Hi, long-time lurker who finally pulled the trigger on a 2016 White Platinum Lariat 501A 3.5 Eco whoooo!!

I've never had a car that shows tire pressure. I noticed that my pressure readings are constantly fluctuating. When I picked up the truck, the pressure of all four tires was 34. All four are fluctuating 1 or 2 psi. One dropped to 31 and then climbed back to 33. They are filled with nitrogen which I thought was not supposed to be affected by the cold.

Is this normal? I should point out that it is FREEZING here. -25'C / -13'F

Obligatory truck pic

VTX1800N1

Normal. Nitrogen fill is snake oil. Nitrogen follows the laws of physics (Boyle's Law, Charles' Law, Gay-Lussac's Law) just like every other gas. In fact, our atmosphere is already 78% nitrogen.

http://chemistry.bd.psu.edu/jircitano/gases.html

E. Manuel

The issue is water vapor.

http://www.popularmechanics.com/cars...a3894/4302788/

Scott91370

It's 'more stable' they say.
It won't leak out like regular air they say.
Give me $100 for it they say.

Emptied it as soon as I got home and put in regular air and haven't looked back.

msgtord

Scam. Your air pressure will always fluctuate a couple psi.

Toddman38

iTrader: (5)

This, especially during colder temps...

Xsbank

Nitrogen is used in aircraft tires because the bottling process removes all the moisture. You do not want to take a tire with water in it down to -65 degrees C and then land on it at 100+ mph, you will get a great shaking! Also, you'll notice that aircraft are parked out on some sort of ramp, its complicated to get a compressor out there, then again, look at point one.

Nitrogen in car tires is a waste of time and in some cases, money. The bottle is painted green by convention so there is some warped "Eco" cr@p that goes with using N2.

As a previous poster pointed out, the atmosphere is 78% N2 anyway, so you get a lot of it for free...

odd-6

My temps are mild compared to yours. Start in the morning at -10C and 36psi and when I get to work 30min later tires are at 39-40psi. Pretty cool being able to see the change.

I usually change the cold pressure as needed during the different seasons.

BlackBoost

This is a must-see

yeditityet

Thanks everyone. I just also want to point out that this thread clearly proves that Tom Brady is innocent! MVP! MVP! MVP!