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ShyGuy · 11-12-2009, 01:24 AM

The TPMS on BMW's measures changes in wheel rotation speed. So I would assume that when you reset your TPMS you're essentially resetting the baseline numbers for those wheels as well. If the tire pressure deviates from when you reset the system (I think by 2-3%), the rotation speed of the wheel has changed and thus will trigger the TPMS light to go on.

11-12-2009, 01:24 AM	#13
ShyGuy RS.net, helping ugly ppl have sex since 2001 Join Date: Nov 2001 Location: Vancouver Posts: 8,341 Thanked 263 Times in 82 Posts Failed 20 Times in 6 Posts	The TPMS on BMW's measures changes in wheel rotation speed. So I would assume that when you reset your TPMS you're essentially resetting the baseline numbers for those wheels as well. If the tire pressure deviates from when you reset the system (I think by 2-3%), the rotation speed of the wheel has changed and thus will trigger the TPMS light to go on. __________________ :makeout: