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      11-12-2012, 06:24 PM   #4
Alpine F31
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Drives: MB E350 4MATIC Estate
Join Date: Feb 2012
Location: Sherman Oaks, CA

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Originally Posted by PeteNJ View Post
Out of curiosity did you code the TPMS system to display PSI and temp? How accurate is it? I wonder why BMW doesn't enable this by default.
I did code it (with much help from a forum member) to do this. I have not checked it against a gauge but I will.

I don't know this for a fact but I was told BMW doesn't enable this in the US for this reason; many drivers would bring their cars into service because the tire pressures and temps would not all be the exact same reading, and they would interpret that as a problem.

Makes sense to me but it could be complete speculation.