Nitrogen filled tires - re. ongoing tire/ride/vibration discussion

T4R_Finally

New member
I've seen several discussions here about the potential highway speed vibration and/or handling issues that may or may not be related to the stock tires, whether they be the dunlops or the duelers. I remember being "warned', before I purchased, to make sure I tested for such a condition.

Well, we test drove 2 different SR5's before we made our purchase, both were Blizzard Pearl and both had the Dunlop tires on them. We didn't experience what we perceived to be any adverse effects as described, with either vehicle. I have no idea what the tire pressures were but I know they both had nitrogen instead of regular air in the tires. The dealer we bought from delivers every vehicle they sell with nitrogen filled tires. Our SR5 was not on the lot, so we had the dealer locate and go get it for us and we signed the papers for it before we had even physically seen it. When we picked it up, they had performed the nitrogen fill on the tires already but the tires were the Duelers instead of the Dunlops that were on the 2 we test drove.

Now, when I first heard about filling tires with Nitrogen, the reasons were presented to me as: better overall ride, quieter ride from less tire noise, and more constant, level pressure over the spectrum of environmental and driving conditions. I sort of thought it was BS but it was only going to cost me $30 to find out. So, I agreed to get the nitrogen back when I installed a new set of Michelin LTX's on my wife's ex-Jeep. I can't speak to the better or quieter ride because I didn't experience the vehicle with the same tires before and after the nitrogen fill. But one thing they promised, that did hold true, was the more constant tire pressures. Our Jeep had the tire pressure monitors in it and they would drive us nuts when the environmental conditions changed enough to cause a tire pressure difference great enough to set the sensors off. From the day we got the Nitrogen to the day we traded the vehicle, the only tire sensor we ever had a warning from again was the one in the spare that wasn't inflated with Nitrogen. Everytime it would get significantly cold, the sensor would show the spare being under-inflated.

Anyway, I digressed somewhat. I mentioned our experiences to our Toyota salesman and his response was "frankly, that's why we put it in everything we sell now, because many models now have the pressure monitoring sensors and, without the nitrogen, the customers were driving our service deparment crazy because they kept going off".

So, I said all that to ask this: Could it be that the Nitrogen helps with the issues others have reported and believe to be linked to the tires and/or pressure in the tires? And could that explain why we haven't experienced any such issues with our SR5 or the 2 that we test drove? Or are we just too "noob'ish" as drivers to notice what others are complaining about? I honestly have no idea if the nitrogen thing is common or uncommon out there. Has anyone else tried or have the nitrogen and still experience these reported issues?
 
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IMHO nitrogen is another way for dealer to get your money. Filling tires with nitrogen makes sense when you came from freezing low pressure air at 30,000 feet back to the earth in matter of minutes. Otherwise benefits are negligible. By the way air itself is 78% nitrogen.
 
If they fill it with nitrogen for free that is ok. Remember the air that you breathe and goes normally into tires is 78% nitrogen anyway. Yes, it does not change as much due to temperature change as regular air. I really never had a problem with regular air. My issue was too much pressure from the dealer. You probably got yours correct from the dealer, hence no real issues. So, if you get it free, take it. If you have to pay, think about the 78% nitrogen you are breathing right now and ask if its worth it!
 
Nitrogen is filled by tanks rather than compressors allowing the elimination of equipment with moving parts thus reducing overhead for dealer/shop owner. I find no difference of what's used and go with whatever they want to put in as long as it's free.
 
Yep, I took Physical Science in high school too and that's why I sort of thought it might be BS. I also got some of the same responses back when I posted a thread about it on a different forum site after getting it done initially. And, yes, the dealer I went to does it for free and every car they have in stock has it done before it even hits the lot.

All I know is that we had our Jeep for over 3 years with the original tires on it and the tire sensors would start chiming everytime it would get cold overnight, in the winter, and we'd start the Jeep up first thing in the morning. And all of the tires were about equal in pressure but all lower than the threshold for the sensors. For the past 2 years or so, we had tires that were nitrogen filled along with a spare that was not. We never once had a tire pressure sensor go off after the nitrogen fill, except for the spare and we also never had to have more nitrogen added either. The monitoring system in the Jeep was nice in that it would display the pressure reading for each wheel by pressing a button. We checked them often and they were almost always dead on and never any more than a pound off from what they should have been. If $30 will buy me out of that pain, even if it does nothing else for me, I'll spend it every time.

Air is 78% Nitrogen, but that means it's 22% other. If that other is sensitive enough to the environment, that's a significant percentage.
 
All I know is that we had our Jeep for over 3 years with the original tires on it and the tire sensors would start chiming everytime it would get cold overnight

My 2005 wife's Mazda3 has pressure sensors too and tires has always been filled with air. It's almost 6 years old now and sensors are still fine.

If dealer fills tires with nitrogen for free - that's fine, but I wouldn't pay a $1 for it. Just my opinion though.
 

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