How does the car measure tire pressure/temperature?

BayDriverSF · 03-29-2021, 10:41 PM

I used to think the tire pressure/temperature sensors were in the Tire Valve Stem Caps. But of course, they're not. The caps are just little plastic pieces.

How does the car measure it then?

I was thinking about this while considering ordering these M-branded stem caps.

bcparker2 · 03-29-2021, 11:45 PM

Inside of the tire there is a block sensor that is attached to the valve stem just google "tpms sensor" and you'll get the idea of what it looks like.

BayDriverSF · 03-30-2021, 12:19 AM

Quote:

Originally Posted by bcparker2

Inside of the tire there is a block sensor that is attached to the valve stem just google "tpms sensor" and you'll get the idea of what it looks like.

Interesting. I read that metal valve caps interfere with these tpms sensors, so that only plastic valve caps are recommended. Too bad since metal valve caps would look better and be sturdier.

03-29-2021, 10:41 PM	#1
BayDriverSF Second Lieutenant 204 Rep 243 Posts Drives: BMW M5 2021 Join Date: Mar 2021 Location: San Francisco Bay Area iTrader: (0)	How does the car measure tire pressure/temperature? I used to think the tire pressure/temperature sensors were in the Tire Valve Stem Caps. But of course, they're not. The caps are just little plastic pieces. How does the car measure it then? I was thinking about this while considering ordering these M-branded stem caps. Attached Images Last edited by BayDriverSF; 03-29-2021 at 10:42 PM.. Reason: add pic
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03-29-2021, 11:45 PM	#2
bcparker2 Private First Class 105 Rep 142 Posts Drives: BMW M5 (F90) Join Date: Oct 2020 Location: Texas iTrader: (0)	Inside of the tire there is a block sensor that is attached to the valve stem just google "tpms sensor" and you'll get the idea of what it looks like.
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