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ksquid 09-01-2006 09:02 AM

Re: Air Replacement Therapy...
Especially when you sleep through statistics class.

pushrod 09-01-2006 10:00 AM

Re: Air Replacement Therapy...
The important thing is to change the air in your tires every 5000 miles.

It's up to you whether to use regular or synthetic.

I use Helium in my tires, to compensate for my lardass.

FrankS1 09-01-2006 12:32 PM

Re: Air Replacement Therapy...
I've known people (racing types) who carry a relatively small cylinder of high pressure nitrogen to the track to pump up their suspension components. As long as they are taking it along, they put the nitrogen into the tires. Saves carrying along an air compressor, or borrowing a "psssstt" from the neighbor's compressor.

As someone already posted, it's the fact that it's dry, not that it's nitrogen, that makes the difference. An external resorvoir shock absorber much prefers dry fill gas, not some moisture to get in with the oil. There are lots of tires that certainly contain some moisture, and they seem to work OK, so I'd disbelieve any claims of enhanced performance.

DaveFla 09-01-2006 04:38 PM

Re: Air Replacement Therapy...
Besides the water vapor, there are other gases which may have small enough molecules to escape through your tire's compunds, hence the need to reinflate. Hence, if you have 100% nitrogen from the get-go, you may not need to inflate as often.

At least, that's what my pal the FAA-certified aviation mechanic said when I asked him about benefits in street tires. Apparently, aerospace tires are inflated with pure nitrogen for similar reasons.

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