Led stem cap alerts [Archive] - Bimmerfest - BMW Forums

: Led stem cap alerts

07-18-2008, 10:07 AM
My new/used M3 has caps with Leds in them on the tire valve stems that go off when pressure falls 5 lbs below original set pressure.

Has anyone used these before and how do you like them?

07-19-2008, 07:16 AM
Use a GOOD tire pressure gauge once a week.