Follow up: the car reported ALL tires low not just one. Is the e70 TPMS really that lame? I thought it was all sensors low because ambient temperature drop. Filled up all the tires reset TPMS only to have a repeat a couple days later. That time I noticed one tire wear lower than all the rest and looked for the screw. Very disappointed in the TPMS if this is the case.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)