There will be a small reduction in pressure drop with time with a pure nitrogen fill compared with air. However, I doubt it is worth the cost or inconvenience. You should be checking your tire pressure regularly anyway and adjusting the pressure as needed with seasonal temperature changes. What race cars do usually has very little to do with what passenger cars should do. Apparently, some commercial and military applications call for nitrogen fills. Again, that probably has little to do with passenger car applications.
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Originally Posted by Caymus
Must be some advantage to nitrogen. I thought most race car tires are nitrogen filled.
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