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What is the big deal with the nitrogen filled tires.....I've heard it being used as a selling point in commercials. I know NASCAR uses it but, how much does it really help on a street car. As it is the atmosphere is almost all nitrogen any way....70 something percent.
See that's what I get for wandering into an unknown forum for the first time and leaving a post. I'm going back to politics & controversies where I know my way around.
Unlike traditional compressed air, nitrogen's pressure is fairly stable regardless of temperature changes. Regular compressed air filled tires can lose about two psi for every ten degree drop in outside air temperature. So let's say you filled your tires to 32 psi at 75 degrees. Few days later a strong cold front passes through and the morning low is 35 degrees. Your tires could be as low as 24 psi.
Unlike traditional compressed air, nitrogen's pressure is fairly stable regardless of temperature changes. Regular compressed air filled tires can lose about two psi for every ten degree drop in outside air temperature. So let's say you filled your tires to 32 psi at 75 degrees. Few days later a strong cold front passes through and the morning low is 35 degrees. Your tires could be as low as 24 psi.
I'm in a cold climate where temperatures can easily drop at least that much but I've never actually experienced that kind of change in tire pressure.
One article I found had said "about two psi". The above article states "about 1 psi". Another article stated one to two psi for every ten degree drop in temperature.
Every year I go through the same thing. The temp drops below zero and my low tire pressure lights come on in my cars. Nitrogen would solve it. This fall I pumped my tires up 5psi over mfg recomendation and haven't had the problem this winter yet.
Unlike traditional compressed air, nitrogen's pressure is fairly stable regardless of temperature changes. Regular compressed air filled tires can lose about two psi for every ten degree drop in outside air temperature. So let's say you filled your tires to 32 psi at 75 degrees. Few days later a strong cold front passes through and the morning low is 35 degrees. Your tires could be as low as 24 psi.
I live where that swing happens on a fairly regular basis. I have NEVER seen that big of swing in tire pressure.
Quote:
Originally Posted by Vansdad
I'm in a cold climate where temperatures can easily drop at least that much but I've never actually experienced that kind of change in tire pressure.
Me neither. Not in 32 winters worth of driving in cold climates.
One article I found had said "about two psi". The above article states "about 1 psi". Another article stated one to two psi for every ten degree drop in temperature.
I check them every week, 52 weeks a year. If going on a longer trip (200+ miles) I check them before I leave the driveway, no matter if it was the day before or 4 days since I last checked them.
So why do they need it in NASCAR, it's not like the temperature changes that much from one pit stop to the next one that they've changed tires during?
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