View Single Post
      10-31-2015, 07:22 AM   #9
PrematureApex
Colonel
840
Rep
2,402
Posts

Drives: N55 X1, N54 135, s54 m3
Join Date: Jan 2008
Location: Philadelphia

iTrader: (0)

Quote:
Originally Posted by vstolpner View Post
I can tell you it's quite ineffective. It'll warn you if you get a flat but realistically you should notice it yourself. Plus I think it needs a couple kilometers to confirm that the tire is actually flat.

I picked up our car from the dealership and then decided to check the tire pressure - all wheels were significantly under inflated anywhere from -7psi to -12psi and the FTM system didn't throw any errors.
It might have been poor setup on the part of the dealer but I no longer rely on the system whatsoever.
.
Mine have always worked great. But again, it works on a differential, so if all tires are similarly low, yeah. Set up correctly, it works correctly, within a few tenths of a mile usually, if not less.
__________________
'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs)
'14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat)
'08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat)
Appreciate 0