When a wheel has two valve stems, does that
07-12-2009, 10:42 AM
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mean they have TPM sensors mounted?
07-12-2009, 01:29 PM
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U can fill nitrogen more purely into the tires. One hole is to fill with nitrogen and the other is purge the old air out.
I dont believe in nitrogen. 80% of air is nitrogen. Pure nitrogen has no moisture so it makes ur tires last longer on the inside but we're not driving the damn tires for 10 years. Maybe 2 to 3 years MAX. Nitrogen is not that much lighter than air. Check the periodic table and u'll see what I mean.
I dont believe in nitrogen. 80% of air is nitrogen. Pure nitrogen has no moisture so it makes ur tires last longer on the inside but we're not driving the damn tires for 10 years. Maybe 2 to 3 years MAX. Nitrogen is not that much lighter than air. Check the periodic table and u'll see what I mean.
07-12-2009, 01:42 PM
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Originally Posted by brabusw209amg' post='940235' date='Jul 12 2009, 02:29 PM
U can fill nitrogen more purely into the tires. One hole is to fill with nitrogen and the other is purge the old air out.
I dont believe in nitrogen. 80% of air is nitrogen. Pure nitrogen has no moisture so it makes ur tires last longer on the inside but we're not driving the damn tires for 10 years. Maybe 2 to 3 years MAX. Nitrogen is not that much lighter than air. Check the periodic table and u'll see what I mean.
I dont believe in nitrogen. 80% of air is nitrogen. Pure nitrogen has no moisture so it makes ur tires last longer on the inside but we're not driving the damn tires for 10 years. Maybe 2 to 3 years MAX. Nitrogen is not that much lighter than air. Check the periodic table and u'll see what I mean.
07-12-2009, 02:01 PM
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Originally Posted by El Immigrante' post='940249' date='Jul 12 2009, 05:42 PM
Thanks. How would you know if a wheel has TPM sensors installed?
07-14-2009, 05:52 PM
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Originally Posted by brabusw209amg' post='940235' date='Jul 12 2009, 05:29 PM
U can fill nitrogen more purely into the tires. One hole is to fill with nitrogen and the other is purge the old air out.
I dont believe in nitrogen. 80% of air is nitrogen. Pure nitrogen has no moisture so it makes ur tires last longer on the inside but we're not driving the damn tires for 10 years. Maybe 2 to 3 years MAX. Nitrogen is not that much lighter than air. Check the periodic table and u'll see what I mean.
I dont believe in nitrogen. 80% of air is nitrogen. Pure nitrogen has no moisture so it makes ur tires last longer on the inside but we're not driving the damn tires for 10 years. Maybe 2 to 3 years MAX. Nitrogen is not that much lighter than air. Check the periodic table and u'll see what I mean.
07-14-2009, 08:28 PM
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Originally Posted by Axeman' post='942401' date='Jul 14 2009, 06:52 PM
The benefit of nitrogen has more to do with the fact that unlike compressed air, it does not expand or contract at different temperatures, meaning you will always have constant pressure in your tires. A cold tire can have up to a -5 psi variance compared to one that has been run and is hot (thats why they always tell you to check tire pressures when your tires are cold). This can make a significant difference in handling and can make a BIG difference on a track.
07-14-2009, 09:51 PM
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Originally Posted by El Immigrante' post='940249' date='Jul 12 2009, 04:42 PM
Thanks. How would you know if a wheel has TPM sensors installed?
07-15-2009, 02:18 PM
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Originally Posted by Axeman' post='942401' date='Jul 14 2009, 06:52 PM
The benefit of nitrogen has more to do with the fact that unlike compressed air, it does not expand or contract at different temperatures, meaning you will always have constant pressure in your tires. A cold tire can have up to a -5 psi variance compared to one that has been run and is hot (thats why they always tell you to check tire pressures when your tires are cold). This can make a significant difference in handling and can make a BIG difference on a track.
Actually, nitrogen still expands and contracts due to temperature variations because it follows Boyle's law.
The difference, as brabusw209amg stated, is that nitrogen is dry.
It's the moisture in normal compressed air that causes the larger pressure fluxuations with respect to temperature.
If you have easy access to a filling station which uses good equipment and properly maintains their compression system (empties out the purge, etc), then normal air will be just as good as the nitrogen. If you don't, then nitrogen is a relatively easy way to make sure you have pretty stable pressures.
Side note: nitrogen's rate of migration through rubber is very similar to oxygen, so it probably won't make you need to fill up your tires any less often.
07-15-2009, 02:25 PM
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Originally Posted by Axeman' post='942401' date='Jul 14 2009, 08:52 PM
The benefit of nitrogen has more to do with the fact that unlike compressed air, it does not expand or contract at different temperatures, meaning you will always have constant pressure in your tires. A cold tire can have up to a -5 psi variance compared to one that has been run and is hot (thats why they always tell you to check tire pressures when your tires are cold). This can make a significant difference in handling and can make a BIG difference on a track.
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