[silver02svtf]

Bought tires for the wife's van @ costco and yes they filled them with the nitrogen from their tank. Nitrogen (supposedly) will help the tire last longer since there will be less moisture inside the tire when compared to using air from an air compressor. Also tire pressure fluctuation as a result of heat/cold will (supposedly) be reduced when using nitrogen. As far as adjusting the tire pressure afterwards, you are fine just using air (according to them). So far so good with the tires...haven't needed to adjust pressure since the install about 4 months ago.