Re: Adding nitrogen to tires

bill horne wrote: 
George E. Cawthon wrote:


OTOH, I don't believe either nitrogen or oxygen diffuse out of the tire very fast. My winter tires, just put on, are within 2 psi of what they were when I took them off 6 months ago, and my summer tires were within 2 psi when I put them on in the spring as when I took them off last fall. Course, part of the change could be a difference in the temperature. In any case, gas doesn't diffuse out of my tires very fast when the initial pressure is 34 or 35 psi. And when you get a large change it is usually the result of leaks.


Everything I've read for decades indicates 1-2 lbs per month - and that's generally been my experience.


That number you read is probably an average that considers all types of conditions. My experience is quite different from what you stated.

Guess I just have superior tires or tires with no leaks, or a fairy godmother that comes around and keeps the tires full. On my small auto, my tires go into storage at 33.5-34 psi. They go back on the auto 6 months later. Most of the time they read 32-33 psi directly from storage. They are never down 6 psi, (26-28 psi). I would be very worried if they were down 12 psi, i.e, 20-22 psi. The only time I have ever found a tire down 12 psi is when it has a nail in it.

I just put my winter tires on last week. Three tires read 32.5 psi and one read 33.5 psi.

My trailer usually sits from November to April (5 months). I run the trailer tires at 34 psi and they usually read not less than 31, but more like 32-33 psi in the spring.
.

Relevant Pages

  • Re: Old Leisure Craft! Old/ New RVers!
    ... When we got the camper the tires were underinflated by 15-20 PSI. ... Max Load single: 2,335 Lbs @65 PSI ... that does NOT mean the luggage can be one 200# ANVIL!") ...
    (rec.outdoors.rv-travel)
  • Re: New Tires Have Higher Load Rating - Effect on Recommended Tire Pressure?
    ... The manufacturer recommends 30 psi front and rear tire inflation pressure ... with the original tires. ... 1477 vs. the old load rating of 1400? ...
    (rec.autos.tech)
  • Re: Goodyear Integrity tires
    ... Sounds like something's wrong with your tires. ... 29 PSI is recommended by the sticker on the inside of the door frame, ... After all, you spent 18 months in prison for ... are you sure you're Japanese? ...
    (alt.autos.toyota)
  • Re: Does the Chart in this Link Make Sense?!
    ... temperature is only 40 one should inflate their tires to 35psi cold. ... inflate to 37psi cold. ... 32 psi is 32 psi. ...
    (rec.autos.tech)
  • Re: Adding nitrogen to tires
    ... My winter tires, just put on, are within 2 psi of what they were when I took them off 6 months ago, and my summer tires were within 2 psi when I put them on in the spring as when I took them off last fall. ...
    (rec.outdoors.rv-travel)