just dont get your tires TOO hot, they might explode! before you know, your 10 feet in the air about to come down on some stupid honda....

 

well since the tires are new. im making it a point not to do any doughnuts or burnouts, very difficult to resist the urge, but i need them to last longer than 4 months this time.

 

4 Months?!?

I just got new tires, $800. Ha I would be pissed if I had to get a new set after 4 months.

 

i mean... completely my fault...so i can only be so mad..lol.

 

i just messing with you, i heard nitrogen is better than air...dont know

 

yeah that's what i heard but i figured it was just b/s to make money.

 

atmosphere is 80 percent nitrogen. 20 percent more can't hurt, but i don't know how beneficial that would be.

 

It's lighter.

 

derr... i just read up.

unless you drive f1, it's not gonna make a difference (marketing ploy)

 

yeah i figured. but it was free. so why not right.

 

More stable pressure under weather condition ie:take off here in Winnipeg during the winter -20-35C and land in Florida +15C the tire will remain virtually at the same pressure and pretty much free of water (the reason for being more temp. stable).....Nitrogen is used in most Aircraft tires...for that reason alone....

 

+1...

Pretty much b.a. to use in cars.... dont have to worry about them going low too often as the molecules are much larger than that of oxygen..... so therefor it leaks less

 

and only done properly if the wheel has two valve stems..

beers

 

No!

 

The big benefit of nitrogen is not really the nitrogen, as was pointed out air is ~80% nitrogen, its the lack of water. Compressed nitrogen has also been dehumidified. Its the moisture in un-dried air that a standard compressor packs into the tire that causes the problem as it causes a greater range of pressure increase with increasing temperature than dry air or dry nitrogen causes. So the only real advantage of using nitrogen is less pressure change with temperature which can be an advantage at the track but is really not much of an issue on the street. You can also achieve most of the benefit by using dehumidified air (like from a dive shop) which I am thinking about doing as I have a scuba tank in my garage.

 

Nitrox?
like swoop said you can't remove the moisture from the tire with one valve stem.
the rx8 pressuer sensors do not like moisture

 

Well that would have even less nitrogen in it than air as Nitrox is higher oxygen cotent than air and its more expensive. I'm gonna go with plan old dehumidified air.

 

the problem the way I see it is that the air compressors that are used by the tire companies
do not have automatic drains and the water tends to build up. Air Force bases have a strict proceedure of signing off on manually draining the compressors every morning.
I know about Nitrox I am certified to dive with it

 

Its not just the draining of accumulated water in the compressor, unless the compressed air is passed through a drier you are concentrating the humidity present in the air (which is significant here in Florida) when you compress it even though it is still in the vapor state and not precipitated out as a liquid. Draining the compressor tank and lines merely removes the extra water that has precipitated out in the tank and lines. While this is a good idea, the compressed air within the tank still has a high humiditiy (higher than ambient since you compressed it) until you do something to remove it from the vapor (gaseous) state like passing it through a drier. It is this vaporized water that is the problem that dry air and nitrogen fills attempts to alleviate.

 

I filled my tires with helium and attached a GT wing. Now I can fly.

 

Yes but now your RX8 has a tendency to flip upside down and fly upside down. You will lose all of your fluids, this is a terrible idea. Didn't yo mama never tell you not to put water wings on yo feet boy.

 

I never listen to her, I was water skiing under my own power at the age of 5, biatch.

 

My tire dealer recently got outfitted to inflate tires with Nitrogen. For $39, they will re-inflate all 4 tires with Nitrogen and, for the life of the tires, if you ever need your pressure adjusted, or if you have a flat and get it repaired, they will refill with Nitrogen. If you have to adjust the pressure with regular air or have a flat fixed elsewhere, I can take it back to them to have it refilled with pure Nitrogen at no extra charge.

There were a couple of selling points for the Nitrogen. One is that the pressure is supposed to remain more constant and is not as sensitive to outside temp changes. The other was that it is supposed to improve the ride and soften it somewhat.

It is also not as susceptible to moisture buildup which can damage the tire pressure sensors inside the wheels. They told me they are now starting to see some early 2000+ models come in with tire pressure sensors damaged by moisture over time and needing to be replaced - and they aren't cheap.

I recently put a set of Michelin tires on my wife's Jeep that are typically good for 70 or 80 thousand miles so I thought it might be worth it to invest in the Nitrogen. There did seem to be a noticeable difference in the ride. Her Jeep has a tire pressure monitoring system and reports the pressure and alerts for each wheel individually. It's a pain in the winter when tire pressures go down so I'll be interested to see how different it is with the Nitrogen.

It seems like the type of tires that can be had to fit the 18" rims on the '8 (low profile performance tires) don't really lend themselves to an extended amount of mileage. So, I'm wondering if it is worth it to go with the Nitrogen. Curious if anyone else has done it and do you notice any significant difference? Right now, I have Kumho ECSTA-something or other tires on my '8 and they have about 16k on them. Tread still looks good but I've been told not to be fooled, they may wear out in another 10 - 15k.

 

I run 78% nitrogen and 21% oxygen, with a small amount of some trace gases, in my tires.

 

Complete waste of money, unless your rx8 is a certified airplane you'll never see the temperature change they describe.