this post was submitted on 03 Mar 2026
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[–] Ulrich@feddit.org 5 points 1 day ago* (last edited 1 day ago) (4 children)

Yeah, a couple problems with that:

  1. You're going to have a tire pressure light on forever.
  2. There's a reason these are mandated. They're critical safety (and efficiency) systems.

As always, these are systems of convenience, and the alternative is to check your tire pressures every day before leaving home.

Older cars use a wheel speed sensor-based TPMS. It's not as effective or reliable but it also doesn't emit any signals that can be read by other devices.

[–] SaveTheTuaHawk@lemmy.ca 1 point 15 hours ago

There’s a reason these are mandated. They’re critical safety (and efficiency) systems.

not why they were mandated.

The US and Canada at one point could hit their Paris Accord C02 ouputs just by keeping car tires properly inflated.

[–] ragepaw@lemmy.ca 32 points 1 day ago (2 children)

I managed to drive cars for 30 years without a TPMS sensor and the only time I ever had a to check the pressure on a tire, was when I knew i had a leak and didn't have time to fix it. I can also tell by the way my car drives if a tire is soft. I also had an air pump in my car powered by a cigarette lighter adapter that I could fill my tires.

My current car, from 2019 doesn't have one. I've managed to own it 7 years (this week) without needing to check the pressure 2500 times.

The assertion you need to check your pressure everyday without a TPMS system is ridiculous.

[–] bluGill@fedia.io 0 points 1 day ago (5 children)

If you didn't check your tire pressure in the last 20 minutes how do you know you didn't just drive over a nail and get a slow leak? TPMS checks every few seconds so you know when there is a small problem. Anyone will notice a fully flat tire, but a lot of people used to drive on low tire pressure for months without knowing. Once someone knew their tire had a problem they would check daily (until they got it fixed), but many people never knew in the first place, and even though who did know often took a week before they found out - they of course have no way to know since nobody checked their tire pressure daily much less every 20 minutes.

[–] cecilkorik@lemmy.ca 8 points 1 day ago (2 children)

I've been driving for 30 years. Do you want to guess how many times that's happened to me?

Meanwhile, I've apparently been living in a totalitarian surveillance state for at least a few years now, and you know how many times that's happened to me? I'll give you a hint, it's more than the number of times I've run over a nail causing me to drive around on low tire pressure without knowing it.

[–] SaveTheTuaHawk@lemmy.ca 1 point 15 hours ago

Longer than that for me. Never happened, but I do not run tires more than 8 years old, regardless of mileage.

[–] bluGill@fedia.io -1 points 1 day ago (1 child)

What matters is the whole community. Statistically it happens to someone in your community. Society wasted a lot of fuel (read global warming) just on low tire pressure.

Surveillance is a problem. So is global warming.

[–] cecilkorik@lemmy.ca 1 point 1 day ago

That may have been the intention but I doubt it ever worked as effectively as they claimed it would. Besides, it will probably cost at least 1 AI data-center of carbon emissions to continuously surveil all these people with TPMS sensors, so the argument could be made that you're actually reducing carbon pollution at this point by removing yours.

[–] hobovision@mander.xyz 5 points 1 day ago

Low tire pressure is not a safety issue, more of a efficiency issue, until it is so low that you'd need to be paying ZERO attention to the car's handling to not notice. Lower pressure actually increases performance (to a point, and depending on the tire) because it can allow more rubber to contact the road. It is pretty typical to air down to around 20 psi for performance driving even if it's closer to 35 for daily driving.

It's very easy to notice if one tire loses pressure because you'll have a very strong pull to one side, almost like a bad alignment. I got my tires rotated at a shop and they deflated the tires for some reason and forgot to refill one of them. On my way home I was freaking out that they fucked my alignment because it was handling so weird on the suburban roads home (not even twisty performance driving). My TPMS didn't even go off until I was basically home already. When I checked the tire it was maybe 15 or 20. Certainly not dangerous but also certainly noticeable.

[–] CADmonkey@lemmy.world 4 points 1 day ago

Have you met people? Do you think that battered old Chevy is driven by someone who cares about the TPMS light? They can ignore it as effectively as the check engine light.

[–] ragepaw@lemmy.ca 0 points 1 day ago

You clearly need a TPMS if you aren't smart enough to detect when your car pulls to one side, drags, or makes a loud FWAPFWAPFWAP sound.

[–] hector@lemmy.today 1 point 1 day ago

I am suspicious of that being the motivation behind this.

[–] yucandu@lemmy.world 1 point 1 day ago (1 child)

I live in Canada and my snow tires haven't had functioning TPMS in years. I do have a tire pressure light on forever, and they're not mandated.

[–] Ulrich@feddit.org -2 points 1 day ago (2 children)

Cool. Did you come here just to tell us that you're proud to drive unsafely or what?

[–] SaveTheTuaHawk@lemmy.ca 1 point 15 hours ago (1 child)

If only there was some kind of way to periodically check tire pressures.

[–] Ulrich@feddit.org 1 point 13 hours ago

No one does that. Nor is it possible to do while the vehicle is rolling down the road.

[–] yucandu@lemmy.world 0 points 1 day ago (1 child)

Do you drive without a LIDAR? Why, do you like to live dangerously?

[–] Ulrich@feddit.org 1 point 1 day ago (1 child)

If my car had LIDAR I would certainly take reasonable measures to ensure it continued working, yes.

[–] yucandu@lemmy.world 1 point 1 day ago (1 child)

My snow tires didn't come with TPMS sensors.

Because they're not mandated.

Just like LIDAR wasn't mandated on your car when you bought it.

[–] Ulrich@feddit.org 1 point 1 day ago

TPMS sensors are in the wheels, not the tires. The only way they would no longer be there is if you had them removed.

[–] CADmonkey@lemmy.world -2 points 1 day ago (2 children)

1.) Lol, no I won't. That light can be removed. Or if it's a Ford, you can access the vehicle with Forscan and turn off that functionality.

2.) How did we ever survive before 2008? Were there disabled cars with shredded tires every 20 feet? Was it an apocalypse of failed tires? People who don't bother to check tire pressure won't bother for yet another warning light on their dash.

[–] SaveTheTuaHawk@lemmy.ca 1 point 15 hours ago

the vehicle with Forscan

I read this as Foreskin

[–] Ulrich@feddit.org 0 points 1 day ago (1 child)

That light can be removed

LOL often times it cannot, because it's not a "light" at all on modern vehicles.

How did we ever survive before 2008?

A lot of people didn't. That's why it was mandated.

[–] CADmonkey@lemmy.world -1 points 1 day ago (1 child)

Maybe YOU can't remove the light.

[–] Ulrich@feddit.org 2 points 1 day ago

This has nothing to with me.