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whats the difference? Is it supposed to be lighter or something?
I got it put in all four for $25 because the guy said it would be less prone to leaking and it was a dry gas (no rusting of the wheels), plus it does not blow out like air and it runs much cooler in the summer (mid 90's here), increasing the tire life and improving performance. I figure if planes and race cars use it, why not me?