good luck getting a real answer, as there really is none. people are gonna go both ways here. here is the breakdown of the "supposed" goods and bads:
Goods:
More stable handling
Better gas mileage
Better ability to maintain pressure
Bads:
Cost...
Cost...
Cost...
According to some industry mags i get at my shop, the real reason for nitrogen is because it doesn't have any water vapor in it. The water vapor in regular air can wreak havoc on the TPM sensors in the wheels, corroding them and causing the light to come on.
I believe the latter explanation. Its up to you to decide what to believe.
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