Well for the reasons they stated,  it may be bogus, but not
for other reasons.  Any gas, the does not inclued oxygen,
or water, will help keep the rim from rusting of corroding, and
pervent leaks at the bead.  AL or steel, they all have
problems over time at the bead.

John Rodgers wrote:

> Frank,
>
> That's bogus! It's a marketing ploy by Costco.
>
> Gases - nitrogen or otherwise - all follow the "Ideal Gas Law". This law
> - oft stated in chemistry and physics - is comprised of three other laws
> - Boyles Law, Charles Law, and Gay-Lussac's Law.  A fairly comprehensive
> and easy to read summary of these laws is found in Wikipaedia. The
> inside volume of the tire remains constant, so as temperature changes,
> whether from the weather or from rolling friction on the road, the
> pressure will change. The case for nitrogen being used in the Agilis
> tire is that it is a very dry gas - no entrained moisture - and being a
> relatively inert gas, it reduces the tendency of the tire to rot.
>
> BTW, I'm soon to need new tires, and the Agilis is my choice for the
> next set.
>
> Regards,
>
> John Rodgers
> 88 GL Driver
>
> Frank Condelli wrote:
>
>> In a message dated 20/09/2007 6:15:56 A.M. Eastern Standard Time,
>> WHalsey@sya.org writes:
>>
>> Why  nitrogen? I have never heard of that.
>>
>>
>>
>> Because that's what COSTCO is doing.  The  pamphlet I got from COSTCO
>> says:
>> Nitrogen helps stabilize a tire's  inflation pressure.
>>
>> Cheers,
>>
>> Frank  Condelli
>> Almonte, Ontario, Canada
>> '87 Westy & Lionel Trains (_Collection for sale_
>> (http://members.aol.com/Fkc43/trainsal.htm) )
>> _Frank Condelli &  Associates_
>> (http://members.aol.com/Fkc43/busindex.html)
>> - Vanagon/Vanagon Westfalia Service in the Ottawa Valley
>> _Vanagon Stainless Steel Exhaust  Systems_
>> (http://members.aol.com/Fkc43/stebro.htm)
>> _BusFusion_ (http://members.aol.com/BusFusion/bfhome.htm)  a VW Camper
>> camping event, Almonte, ON, June 07 ~ 10,  2007
>>
>>
>>
>
>