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I think Nitrogen's benefit is exaggerated.  If you're going racing, OK.  But for daily driving with good condition rims and tire valve, regular air is fine.  

"A tire filled with “plain old air” will lose 1.5 PSI in less than a month; with nitrogen, this could take three months or longer. "  

This never happened to me unless I have a bad tire valve, tire leak, or leaky rims.  I check my tires every few months and it only goes down buy a couple of psi.  It's better to invest in new tire valves rather than getting nitrogen IMO.  With properly inflated tire with just regular air, nitrogen will not give you that much benefit.

Btw, gas station air could be bad sometimes because they don't filter out the water vapor in the hose, compressor, etc, which will end up inside your tire.  Buy a good quality cigarette lighter air compressor.

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I haven't seen any cigarette lighter air compressor that filler the air moisture.    Anyhow, that's a good point.

If $7-8 / tire of nitrogen give you the piece of mind, go for it.    But why don' ...
B2L2 發表於 2009-11-3 14:13

LOL...I've never seen a cigarette lighter air compressor spits out water vapor in my life...

Seriously, the air compressor at gas station sits in hot/cold/humid weather all year around, or simply just by compressing air in the tank causes vapor to liquidfy.  You can literally open the tank and drink from it!

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The Exaltos are highly regarded for some reason and I wonder how well they work for all-season tire too.  They're not cheap either.

My stock tires are MXM4 and according to the C&D test that was posted by LIk, it's not so bad in the snow and almost tie with Aplin???  I really doubt the result given the performance in wet.  I don't feel confident with that tire in wet at all!!!  I guess I'll find out this winter.

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The tread for the MXM4 is actually not tight together.  As you can see there are four big channels for water to run off.  The C&D review said it did well in wet condition.  Oh well, maybe I'm asking for too much...