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      06-24-2008, 02:51 PM   #22
spudw
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Drives: 2009 128i
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Quote:
Originally Posted by RobLS View Post
I believe the green caps mean its filled with nitrogen instead of air. Suppose to be better.
Yes. They use nitrogen in a lot of racing tires (including F1). It's less prone to expansion than oxygen, so the tire can be filled closer to optimum PSI when cold.
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2009 BMW 128i ~ Jet Black ~ Sport Package ~ Sunroof ~ USB Integration ~ Delivered on October 14, 2009