BaileyII

Crazy question. Can TPMS be added to my car in the settings? Can it be added w/ my Foxwell NT520? Can it be added by the dealer? I know it’s not worth it to add. I have good habits of checking my air pressure regularly.

thanks,
b

Doug H

I don't know, but I would happily give you mine on my 2012 just to get rid of it.

BaileyII

Doug H you are a kind sir!!! Thank you & have a happy new year. I will take you up on that offer. Haha.

jhbrennan

In addition to having sensors in the wheels the OEM TPMS requires sensors in each wheel well plus the wiring to get the info into the dashboard computer - if it could be done, it would really be costly

BaileyII

Oh thank you. I didn’t know if it was just a coding plus the TPMS sensors.

Doug H

Okay, I will hijack no that you got an intelligent response. Can some tell me how to disable them or turn them off so I don’t have warning sign since one of my monitors is going out? Pretty much used to having new cars and never had to replace one before. For now, I’d rather turn them all off if I can get rid of lights on the gauges.

jhbrennan

It can be done. Search over in the GT3 forum and look for user Mooty - I believe he did this 10+ years ago.

Doug H

Cool. Thanks. I know Mooty! I'll send him a PM.

linderpat

Back to the original question - there is no good reason to add TPMS. That is another government mandated nanny, and assumes we are all too stupid to keep track of these things. Perhaps it is true for most drivers, but for guys who drive sports cars, generally a different level of attention is paid to the car systems.

BaileyII

Yea I just thought if it was a simple coding plus adding the sensors I would be in.

Doug H

It is nice if you hit a nail on the interstate and it warns you in time to get off the interstate and address as opposed to not knowing until it is totally flat.

Sporty

I don't have them in my '05, but you can buy some off Amazon for 60$ or so, my friend just did that for his Kids' Civic. They work off the valves stem cap and talk to a small display via bluetooth (?)
When working properly I think TPMS should be standard in every car as a safety featuer. In my MBI ran over something and all of a sudden saw my one tire pressure begin to drop and it gave me enough warning to pull over to a safe location, as opposed to a sudden thumping of the tire and you have to immediately pull over no matter where or unsafe it is. Never had a problem with all my other vehicles with TPMS, wonder why Porsche's is so problematic.

Petza914

Porsche isn't any more problematic than any of the other systems. The issue is timing the transmitter replacement with Waring out a set of tires. Usually one transmitter starts failing about 5,000 miles into a 20,000 mile set of tires.

Those of us who drives these cars and have an acute sense of how they feel and have religious maintenance procedures can detect driving Dynamics changes with about a 5 psi difference in one tire, which still gives enough time to pull over safely.

Personally, I'm very glad both my 997s are 05s without TPMS systems in them.

Conversely, I'm very glad my daughter's car has the system for her safety and the hassle is worth it in that case in my book.

Doug H

Maybe feel a 5 pound change on a road course or during high performance driving (definitely when tires heat and over-inflate), but can you really feel a 5 pound DROP driving mostly straight down an interstate?

RE: TPMs don’t last as long as the tires?

This is confusing. Seems like they last 7 or 8 years so definitely good for 20,000 miles, but in awe you get 20,000 miles on rear tires. I get maybe 9,000 or 10,000 miles on rear tires with neutral toe. What camber or tires are you running?

I currently have one of my TPM sensors on the fritz on my 2012, but I don’t think I have ever had one fail before. I am kind of torn about wanting to keep them activated on my GTS because of the centerlocks. Feel like I need as much warning as possible with the centerlocks.

Petza914

Tougher to feel in the rear tires, easier on the fronts. If you replace the sensors every time you replace tires, then it's not usually a problems because like you say they last 7-9 years. The problem is when reusing them through multiple sets of tires, Murphy's Law has them failing 1/3 of the way through a set.

I get about 10,000 miles from a set of rears and 20,000 from the fronts. I run Nitto Invos with these alignment specs.



With no rubber bits left in the suspension and camber lock kits, etc , I haven't had to realign the car since this one was done and tire wear is nice and even (inside rears wear first of course).


My wife's car gets 18,000-20,000 miles from a set of rears, but she doesn't drive like I do. Her specs are these