Thread 28579316

>sole job is to monitor your tire pressure but it even fucks up doing that
>always 5-10 psi off what an actual gauge says
>needs to be recalibrated every thousand miles to turn the light off
>end up going bad after 5 years anyways and costs a hundred fucking dollars for all of them

>>28579316 (OP)
5-10 psi difference is perfectly fine for what it's designed to do
Prevent blowouts.

>>28579316 (OP)
Ive never had to "recalibrate" EVER.
And I doubt you have either because then you'd understand that your "actual gauge" (whatever the fuck that is) also is giving you data of unknown accuracy.
They cost $25 for 4 of them.
If you cant replace them yourself, that's a skill issue you need to work on.

>>28579359
When someone pulls the battery it'll happen.

>>28579364
What car does that? My Toyota uses those sensors and didn't give a shit when I had to pull the original turkshit 12 V battery.
Though it doesn't even display the pressures---it just lights up the TPMS light if one of them looks wrong or it's not getting a signal.
I think it does require coding tools if you swap the sensors for another set with different ids, but tire shops can usually handle that if you don't want to start messing with Techstream..

Mine are accurate. I inflated them 3 days ago to 35/40 and this is after driving.

>>28579364
tell me youre a complete no-tools wrenchlet without telling me.

Mine aren't working how much does it cost to have a shop all 4 replaced?

>>28579316 (OP)
Mine work pretty good, saved me at least a couple of tires, and they are helpful off road when you ride deflated.
>always 5-10 psi off what an actual gauge says
Idk mine are pretty spot on, I have several manometers and their and TPMS sensors' readings are usually within 10 kPa, which is perfectly acceptable.
>needs to be recalibrated every thousand miles to turn the light off
What the fuck are you talking about?
>end up going bad after 5 years anyways and costs a hundred fucking dollars for all of them
What the fuck are you talking about?[x2]
I buy OEM ones (the real OEM like Schrader) and don't remember paying more than $30 for each. They definitely last more than 5 years, maybe more than 10.
>>28579364
I used both factory and add-on aftermarket systems, none did that.

>>28579438
Explain all four going out of spec when the car was in a body shop.

>>28579443
Buy them yourself and wait for the next tire change. It costs peanuts on top of your regular tire mount/dismount price.
>>28579454
What's "going out of spec" for TPMS sensor? What does it mean?

>>28579398
Literally 0 problems on either of my cars. op is retarded or buys Chinese tpms sensors.

>>28579392
>I think it does require coding tools if you swap the sensors for another set with different ids
Usually it can be done using the car itself like pushing some buttons in the correct order to start the procedure then trigger the sensors in the correct order by deflating tires slightly.
>Techstream
Costs nothing at your favourite torrent tracker, the compatible cable costs idk maybe $20. If you have a 'Yota there's no reason to not have them.

>>28579464
>Usually it can be done using the car itself like pushing some buttons in the correct order to start the procedure then trigger the sensors in the correct order by deflating tires slightly.
Yeah, I don't think Toyota does that.
At least their newer cars support coding in two sets of sensors so you don't need to re-code if you have a second set of wheels for your winter tires. There's an option to scan for the second set in the gauge cluster menu. Just need to trigger that when the car starts complaining after the swap.

>>28579316 (OP)
Would not be necessary if they taught people to check their tire pressure once a week and people actually did so.
Of course, you need to have your own air pump.
Service stations don't provide that service anymore.
Or if they do, they charge you stupid amounts of money for it.

>>28579487
>Yeah, I don't think Toyota does that.
Check the owner's manual, usually it's in there.
>>28579493
>checking tire pressure manually every week
Helps with very slow punctures only. Just slow one can take a day for most of the air to bleed out. And you get brake dust on your hands, so if you don't check other greasy things that often, it's more convenient to leave that to sensors.
>Service stations don't provide that service anymore.
Depends on the country, around me every gas station has free air pumps. But we don't have a lot of niggers.
>Or if they do, they charge you stupid amounts of money for it.
Are you black? US anons posted something about stations storing air hoses inside because the nogs keep stealing them and asking a bit of money for reconnecting them because it keeps joggers away.

>>28579316 (OP)
I like them because they prevent women from driving on flat tires. I hate them because they go bad and you have to wait till your next tire change to fix them.

Mine are the fritzs and I have to look at a stupid light on my dash every time I drive... and I have like 2 years left on my tires.

>>28579505
Even if the store the hose inside, the nog will break anything and everything within reach. I bought my own air compressor because three gas stations all had broken pumps. We need to deport more than just the illegals.

This is the most made-up, nonsense set of "reasons" to be contrarian about a mostly benign and definitely simple feature thats been on vehicles for at least 20 yrs.

If you want to complain fruitlessly about something, at least choose a good topic. Like the stupidly high beltlines of new vehicles.

>>28579364
>the tire gremlins pulled all four internal batteries of my pressure sensors at once!

You're fucking wrong op.

The only big problem with these is that many, many cars will not display individual tire pressure even if they got a LCD screen.

2nd issue is that some of those same cars won't let you manually pair new sensors which sucks balls having to go to a tire shop or buy an $800 tool each time you swap to winter tires.

-t Civic Si owner.

>>28579316 (OP)
>>always 5-10 psi off what an actual gauge says
Why are you making shit up?

The purpose of the TPMS is to reduce blown out rims to the fleet end user only seeing there is a light, and getting the leak plugged.
They do that wonderfully.

But yeah
>The TPMS tool sets the fucking warning signals(normal, yellow, red), and NOT the car system
>BAD gasket design:
>CUB sensors failed catch on, despite only needing to be replaced on sensor failure, instead of premature gasket failure
>Oems failed to capitalize on just using the ABS sensor to guess wheel angle relative to each other
>There are cars with TPMS systems, that CAN NOT sync to new tires without a OBD2 dongle
>There are cars with TPMS, where there is no way to view the tire pressure

>>28579658
>using the ABS sensor to guess wheel angle relative to each other
That's useless for the end user (actually annoying) and exists only as a way to circumvent the TPMS requirement without adding new hardware.
>There are cars with TPMS systems, that CAN NOT sync to new tires without a OBD2 dongle
This should be mandated.
>The TPMS tool sets the fucking warning signals(normal, yellow, red), and NOT the car system
What TPMS tool? Last I checked mine, the sensors send pressure or pressure and temperature regardless of their values, and only the car (or standalone receiver) decides what to do about the values.

>>28579658
>just using the ABS sensor to guess wheel angle relative to each other
wouldn't this cause issues if you were parked on uneven terrain?

>>28579713
It just won't tell you if your tires deflated while the car has been parked. You have to drive certain distance straight for them to notice the abnormalities and by that time your deflated tire is going to be damaged. I guess the only scenario they work in is really slow puncture combined with regular driving, like 10 kPa a day. Leave the car for two weeks and it won't warn you.

I took them out after they died. Never replacing them.More needless shit in cars to up the price and price of repair.

>>28579316 (OP)
My Porsche TPMS are within 2 PSI of what the nitrogen fill up at Costco says

>>28579576
Mom says it's my turn to be autistic about a very specific thing that's wrong with nucars

>>28579316 (OP)
I bought a summer set, installed them, and they never even worked once even after initiating it in my car's settings

>>28580146
Ask me how I know you're non-white?

>>28579359
>"actual gauge" (whatever the fuck that is)
White collar wagie detected

>>28580203
Is the joke supposed to be wyte pipo don't use tpms? My factory set became my winter set

the only shit that really needs tpms are lightweight cars with low-profile small sidewalls, those are sometimes hard to guage how low they are by looking at them and may not sag at the sidewall.
also trailers I guess.
but even still for most cars you can feel a low tire before it's dangerous.

>>28579316 (OP)
Fuck that half arsed shit, CTIS or nothing

>>28580209
Show me the calibration cert and gage R&R on that piece of shit right now and get your dumb ass the fuck OUT of my shop.
Fuckin clowns.
Pathetic.

>>28580211
No, it's the fact you saved Ghibli filter AIslop from 4chan of all places. Post your hand resting near your father's hand with timestamp to prove otherwise or you're the blackest retard gorilla nigger the world has ever seen.

>>28580253
doesn't ctis constantly leak?

>>28580324
Externally mounted systems like that are generally pretty reliable. It's the internal hub style that's usually notoriously unreliable.

>>28580253
What do you do the moment it gets snagged on something

>>28579316 (OP)
Nope they're nice. They've notified me of low tire pressure situations a couple times, letting me know of a slow leak before it caused issues. I have three cars and two of those are 15 years old with still functioning original TPMS. Pretty sweet.

>>28580338
ah right. yeah i was thinking of the humvee ctis. it was useful but leaked all the time

>>28579316 (OP)
>mfw VW figured out that all you need to tell if there's a problem is the change in torque at the wheels due to the change of pressure
>mfw there are not TPMS on it
>mfw it still tells me if there's a problem with the pressure
>mfw I carry a pump that has a pressure read out
>mfw I don't even have to think about it and I don't have to pay extra for stupid sensors
Das Auto

>>28580079
>nucars
Mandatory TPMS is 20 years old at this point

>>28579316 (OP)
Maybe for normie braindeads it is good. I check pressure every week or before long trip anyway

>>28580229
You're not looking at all your four tires before going somewhere every time. Sometimes you can't even do that because you parked next to a wall or in the snow/sand/dirt or it's dark, so some of the wheels are partially obscured. Sometimes you park on uneven terrain so you can't trust tire deformation to represent the pressure.

mine work lol

>>28580527
>change in torque at the wheels
You sure about that being the actual method of how their system works?

>>28579713
most of them work by measuring relative wheel speed over some period of time. deflated tire = smaller tire = higher wheel speed. you expect deviations in wheel speed during normal operation (turn left and your right side tires rotate faster than the left side tires) so they average it out over some period of time.

at least this is how it's done in theory. my mazda 3 uses wheel speed sensors for tire pressure alerts. it's way too sensitive and will alert me if there's more than like a 3 psi differential.

>>28579316 (OP)
I love the ones that were mandated around 2010 which just give you a dash warning light with no direction. Even better is how when they die the dash light will, at the start of a given day, randomly decide whether it wants to stay on solid or flash urgently

>>28580800
No. I haven't looked into it, but I do know it's reliable and does not require TMPS. It will also not give you an accurate reading of pressure, but you really don't need that. What most people want is just your system telling you if you have a flat or are getting there.

>>28579695
>What TPMS tool?
The one the tire shop uses to get them to output the right kind of information so your car can read it.
You are aware that TPMS sensors are unprogrammed from factory right? You are essentially flashing them for each specific car type, and you can pay to get them pre flashed.

>>28580810
>>28580527
I've seen the VAG variant trigger at half a bar difference, which is decent.

>>28579515
Same

>>28581079
Please don't post about stuff if you "haven't looked into it".

>>28581106
>You are aware that TPMS sensors are unprogrammed from factory right?
Idk, none of the sensors I bought (can try looking up the p/n if you want, they probably are somewhere in the mail) required any programming on the sensor side. Some required specific physical conditions for the first activation like being in a tire rotating above specific speed.
> You are essentially flashing them for each specific car type, and you can pay to get them pre flashed.
I heard there are sensors you can basically clone the IDs to (in order to have several sets of tires with the same sensor IDs), and also something about universal sensors for really wide range of cars/receivers (but I think those are still limited to either 315 or 433 MHz band). Both of these features look like something extra compared to your usual factory sensors.

>at half a bar difference, which is decent.
For sensors measuring pressure half a bar is really shitty resolution. That and other shortcomings of this system are the reasons I wouldn't use the word "decent" while mentioning it.

>>28581333
>For sensors measuring pressure half a bar is really shitty resolution
1/3 to 1/4 of the inflation range is decent.
3 PSI is.... well, pretty bad. Thats down in 1/10 or 1/15 territory

>>28581338
It still covers only one specific scenario unfortunately: single tire with puncture significant enough to trigger the warning but not fast enough to deflate the tire to no-no pressure during the time the car was parked, and that time can obviously be very different. Better resolution might help with faster punctures.

Personally I never had anything like that, it was always either 0.1 bar a week or down from full to 0.5 bar (or lower) in several hours or even minutes. The former has usually been not even a puncture but a bead leak (because of someone not cleaning the bead well enough before mounting or tire monkey applying sealant after specifically being told not to do that) or valve o-rings being dirty or going bad.

>>28581384
I like how you posted 2 scenarios where it would have worked as intended in both cases
:)

>>28581406
It can sort of work in the first scenario with really slow puncture, but it would take at least several weeks to trigger the system, which makes the issue real hard to diagnose or to even notice.
It won't work in the second scenario because driving off from parking spot with no pressure in one of your tires might easily result in tire and possibly even wheel damage. And the system without pressure sensors can't warn you about the pressure drop while the car is standing still, it needs a certain amount of wheel revolutions at certain conditions to notice the difference.

>>28581460
Sorry.

>>28579316 (OP)
I went to firestone and mine went bad within a year.

>>28581310
No.

>>28582296
Nigger.

>>28581450
Yeah, that's fucking bullshit because my GLI did have a puncture and warned immediately when it happened. You're guessing at how it might work and ignoring that it does work and it's every bit as good as TPMS, just without the accurate pressure readouts. What it can do is tell you that something is wrong, which is realistically all you need, especially when it does so quickly and reliably.