[bgbdwlf2500]

Originally Posted by cneary812

it all depends on if you have access to a air compressor. With air you can add all you want whenever you need but usually it costs you some quarters each time. My 05 wheels drop 15psi really fast so I have to watch my tire pressure regulary and top it off every few months. with the 100% nitrogen they claim you won't have to top them off. (drawback is that if you need to top off you can't just add air)

Bottom line... I wouldnt pay 20 bucks to get it done. places like costco do it for nothing. Remember air is 79% nitrogen to begin with.

you should check for leaks, no matter what is filling them it should never go down unless theres a problem or you drop pressure on purpose