Another vote for the trailbrake tpms. I had the valve system installed but now I kinda wish I had the ones I could rotate around as I rotate my tires.
The only challenge I've had is pushing the data to my smarty cam setup given the lame limitation of types and number of channels avail.
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2018 Grigio Telesto F80 M3 DCT | :: Bone Stock ::
2004 Titanium Silver E46 M3 6 Speed | :: Track Car ::
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