New camper coming has nitrogen filled tires

Huntindog wrote:

Thermoguy wrote:

Huntindog wrote:
An often mentioned benefit is that nitrogen molocules are larger than oxygen.... So it does not leak thru the pores of the tire as fast.... probably true but..... Regular air is about 68% nitrogen, so according to this theory every time air is added to the tire the nitrogen % should increase.... IOW, even those that do not initailly have their tires filled with nitrogen soon end up with close to the same percntage as those that do! In short; their is very little benefit to having this done. Especially if one takes into account that the nitrogen filled tires are never 100% filled with nitrogen! That would require suctioning out all of the air before adding the nitrogen.... Which is impossible.

Just Curious - how often are you adding air to your tires? I can go years and never add air. If you are adding air regularly, you might have a different issue you should look into.

Once a year. In the spring when the temps are cooler here in Phoenix. As the temps go up into the summer, the pressure rise that goes along with the temp rise offsets the natural pressure loss that ALL tires experience.

The main difference I have seen is that since I switched to LTs in 2006, is that I get to add air several times to my tires as they now last long enough for me to do so.... When I ran STs, my tires generally lost pressure suddenly and were unable to be topped off. This always happened before their second birthday. So my ST tires never got a very high percentage of nitrogen in them.

Do you think that may have been the reason they failed?:B

I have always needed air every say 3 months. Maybe only 5 or 8 pounds but still. It might have something to do with weight and temperature swings. The air needed thing has occurred on all my trailers and tires except this one with nitrogen, but after 2 years I add a couple of pounds when going out.