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      11-09-2012, 12:10 PM   #1
Second Lieutenant
Drives: 135i
Join Date: Aug 2012
Location: Seattle, WA

Posts: 237
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Tire Pressure Monitor

So after you fill your tires with air and reset the TPM, how much does the air pressure have to drop before it will throw a warning?

I checked my tire pressure this morning and it dropped from 36 front/ 38 rear to 32 front/ 35 rear. Wasn't sure if that was enough to trigger the TPM.
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