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"nitro" as in Nitrogen for tires? Definitely don't spend a dime extra. The highest percentage they can get is 95% on the nitrogen concentrators, and it is not particularly "moisture free". It has no benefit over air.
Go with the pressures listed on the door jamb, and see how that works for you- then adjust for your driving, your roads.
Edit:
I was going to agree with Penguin below, but this should not derail into a post on Nitrogen... it is a scam, pure and simple. In rare instances, the use of technical grade, 99.9% moisture free certified nitrogen from a bottle at the track is a good idea. But this use (pure, certified dry) is being translated into a benefit to 'any nitrogen fill'.... air is 79% N2, the little N2 concentrator in the tire store is 95%... no benefit. Nitrogen and Air all obey the 'ideal gas law'- It is the moisture that expands with heat- Dry Air and Dry Nitrogen are the same.
This is popular since it is one of the last ways for tire stores to make a few bucks selling tires- given that tirerack has eliminated all the profit!
Last edited by ard; 01-15-2010 at 08:05 PM.
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01-15-2010, 06:50 PM
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