Ford850

I check my tire pressure regularly, but I was surprised that my tires were approximately 20% low when I checked them yesterday. My truck tires are LT's and I couldn't tell they were low at all by looking at them. The recent arctic blast must have affected them more than usual. My wife has an Edge with lower profile tires, and those were close to 20% low too.

kidastra

iTrader: (1)

switch to nitrogen. less fluctuation

F-250,LD

Didn't your TPMS alert you that they were low?

king nothing

There's a certain threshold it has to get below before it warns you. My wife's 07 Tahoe actually told you what the pressure was. I'm disappointed that my wife's 2011 edge and my 2013 f150 don't do this

WTF150

Total scam. NEVER pay extra for nitrogen. The air in the atmosphere is 80% nitrogen for crying out loud lol.

The usual rule of thumb is that you will lose 1 psi for every 10 degrees. So if you set your tires at 35 psi when it is 40 degrees out, then you get an arctic blast and it's 10 below, your tires will actually be at about 30 psi.

kidastra

iTrader: (1)

I agree wholeheartedly NEVER PAY for it, but if it's free get it.

bk117wrench

Exactly! Nitrogen is only need for aircraft because of the altitudes they fly at.

Ford850

The TPMS alert did not come on for either vehicle.

MONSTERTRUCK 150

Is there a sensor in the spare ???

kidastra

iTrader: (1)

its also because nitrogen doesn't explode, on landing some plane had air, caused many deaths.


nitrogen does help, yes compressed air is 78% nitrogen, but getting more in your tires is where the benefit is. Fact is nitrogen does keep pressure longer, now that doesn't mean you should be paying extra for it, nor does it mean you can set it and forget it