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KOG
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7,300 Posts
Actually those systems can work well. And there are aftermarket ones which you could use. They are on all new cars because they are now required by law and they are rather pricey little devils overall. Be aware that there are two major types: those which monitor wheel speed using ABS sensors and trigger an alarm if one wheel starts running faster than the other, and those which have sensors actually measuring pressure in each tire. The after market ones will be only pressure sensors which are more expensive, and more accurate in general than the speed sensors.

One major drawback: in the case of our 09 T&C which specifies 35 psi in all tires it is not possible to set the rear tires at say 30psi for improved ride when running with no load as that triggers the alarm. That's a real nuisance as we run empty most of the time. Aftermarket systems allow you to set the alarm pressure level for each wheel individually.
 
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