I was impressed by the accuracy of the old passive version of the TPMS my e90 has. I got the warning light this morning and looked at all 4 wheels and tirers and they all looked fine. I checked the pressure and the right front was 3lbs off and the system picked it right up. just thought I'd share my experience.
Alpine white, shakir orange
carbon roof, black 19's, lighting, executive, HK
side&top view, adaptive susp, mods to come......