Re: TPMS; was: Ferrari fear and other myths | <– Date –> <– Thread –> |
From: Hans E. Hansen (FListhanshansen.org) | |
Date: Fri, 12 Jul 2019 09:11:50 -0700 (PDT) |
In the past I have had cars that analyzed tire pressure like you describe. But I think - not positive - that system doesn't meet the accuracy requirement of the newer regulations. For example suppose you have to replace a single tire. The difference in tread depth - or even if you had to get a different brand of tire, would make the system give a false signal, as it compares the rotational speed between tires. Anyway, it seems all newer cars have sensors in the wheels. Hans. On 7/12/19, George <ygpz4re [at] hotmail.com> wrote: > Fellow Listers, > > Perhaps someone much more knowledgeable than me can give a "TPMS 101" > lecture? My understanding is that not all systems utilize any sensor in the > tire, but instead use the rotational speed of the tire (via the ABS sensors) > to compute tire pressures relative to the other tires (and their respective > rotational speeds) and when the system was "reset". My wife's former Passat > had a similar system, I believe with no sensors in the tires. It would turn > on the tire pressure warning light when the pressure had dropped by 3 or 4 > pounds (turns out there were two punctures - nail and something else - so we > had several recent experiences with the light, resetting the pressures, and > resetting the system). > > I'm open to corrections here.... > > Thanks! > > gp >
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Re: TPMS; was: Ferrari fear and other myths George, July 12 2019
- Re: TPMS; was: Ferrari fear and other myths Hans E. Hansen, July 12 2019
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