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      10-18-2012, 10:09 AM   #3
kscarrol
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Drives: 2011 E90 M3
Join Date: Jun 2010
Location: New Orleans, LA

Posts: 2,064
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You're right, the cool weather can cause pressure to drop but it should have moved back up as the tires warmed up from driving. Over time, tires will very slowly lose some pressure so the only way to know is to actually check the pressure. If the pressure is normal then you have some malfunction is the TPMS. Could also be a case of the tires are simply low and need to be topped up...
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Current: 2011 Space Grey E90 M3, DCT, Comp. Pkg., Conv. Pkg., everything but Cold Weather Pkg!
Gone: 2008 550, Space Grey, Sports Package, Sport Auto Transmission.
Sold: 2004 545i (U.S.), Steptronic, Silver Gray.
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