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Originally Posted by 6spd
No, no, no, none of these reasons are why nitrogen is used. The real reason, although hidden from the public, is much more reasonable than these stupid performance claims. Nitrogen is used because of the new TPM systems used in new cars. These units are made of metal. Regular air contains a slight amount of water vapor, and more is created with the heating of the tire. This water eventually corrodes the sensor units and contributes to their failing, ala the reason so many cars all of a sudden develop TPMS problems. Nitrogen doesnt contain any water vapor and therefore cannot corrode the sensors over time. It is used as a convenient cover up for manufacturers botched TPMS sensor quality. New units are being made of plastic, so nitrogen may see its way into extinction. You won't find this info anywhere or hear it from any dealer, only technician magazines, etc. Just an FYI, so spread the word, more people need to know of this scam and demand better manufacturer quality, not costly cover ups.
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Nitrogen is not required. This is probably due to the valve stem sensor battery life failing before any corrosion issues. They claim 8 to 10 yrs but I've seen 3 to 5 yrs.
I work for Audi and it is not required to have Nitrogen and all dealerships do not offer it! End of conspiracy!
Just an FYI! The new TPMS systems are not going to require sensors in the valve stems anymore. Indirect TPMS is going to be the future for all vehicles.
This system uses the wheel speed sensors to monitor any change in radius/rotation speed characteristics. No sensors, transmitters, or receivers needed so swapping out wheels and tires doesn't require all the expense.
Audi is the first vehicle manufacturer that is standardizing on this indirect TPMS system right now. Like FSI, CVT and DSG, other manufacturers will follow with their versions.
As far as the Nitrogen goes, Those who have used it should be who chimes in. I thought it was bull untill I started using it. Simple as that. I have customers who deny and tell us it's bogus and throw all their knowledge on why, and that's fine. First hand experience doesn't lie. Definately coming from a sceptic!