ktmrfs wrote:
PartyOf Five wrote:
Our mechanic suggested nitrogen in the car tires if we did a rotation as winter approached. Apparentky it doesn't contract and expand as much in the cold and so is better in extreme temps.
That was already a few years ago- the fad seems to have died down.
NOT true. all gases follow boyles law PV=RT. since V (volume) is constant, P is strictly a function of T (temperature) where T is absolute temp, E.G. room temp is 273 or so Kelvin
Nitrogen molecules are slightly larger than Oxygen, so pressure drop from migration through the tire will be very slightly less.
Odd, while I check the pressure periodically, I haven't put any air in my tires over the last 6 months (when we replaced our tires). This is fairly typical to our experience over the years. Modern tires don't lose much air. When you factor in the cost and complication of finding nitrogen to top up, it's just not a big deal.
Theoretically, oxygen could oxidize the interior of the tire faster but are you really going to keep tires on the trailer 10yrs because you are guessing there might be less oxidization?
Not buying random truckers saying it's magical. I've seen then suggest some weird stuff but when you ask for evidence, it's not there.