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E63 / E64 6 Series (2004 - 2010)
The E63/E64 BMW 6 Series builds on BMW's sporty heritage with aggressive lines and an incredible motor to back the design up. Available in coupe and convertible trims with a standard 4.8 liter engine producing 360 horsepower and 360 lb-ft of torque, the 6-series is a popular choice that exceeds expectations.

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Old 05-01-2010, 05:41 AM
Leslierc's Avatar
Leslierc Leslierc is online now
Location: Los Angeles, Ca.
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TPM can fail under extreme temperature

This is a heads-up to folks here who may not be aware. I'm pretty religious about checking that my tyres have the proper pressure. Yesterday, the outside temperature changed from 46 degrees when I left home for work to 88 degrees when I left work (where I park in an underground garage) to return home; with traffic conditions in the evening, the road surface temperature was probably over 100 degrees. My iDrive registered a TPM system failure when I was a few miles away from home. The car felt normal and I did a visual check of the tyres when I stopped at the next traffic signal; however, I pulled into my neighborhood filling station to do a complete check. [This is one of those "old school" filling station/garages with certified mechanics; it has been in the neighborhood for over 40 years.] A technician checked the tyres to make certain they were not punctured (they weren't) and then checked the pressure. The fronts, which should have been 32 psi, were over 36 psi; the rears were over 40 psi, and should have been 35 psi. I had checked and corrected my tyre pressure not quite 2 weeks before. Apparently, the dramatic temperature change yesterday caused the significant increase in tyre pressure. However, even when the psi was returned to normal yesterday, the TPM would not reset. I was prepared to take the car to the dealer this morning but, as I pulled out of my garage, the TPM system automatically reset - saving me my Saturday morning. So, this is for you folks who live in areas where outside temperatures are warming up. Be certain to check your tyre pressure.

Have a great weekend!

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Old 05-01-2010, 08:17 AM
chasz17 chasz17 is offline
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Tire pressure (cold) changes approximately 1 PSI for every 10 deg. f. In New England at this time of year and in Fall, I check and adjust my tire pressure at least once a week.
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