Cerebrum Sensors

[Coolhandz]

Besides an article published in Not A Tesla App, I have found it hard to find anything on these sensors which are at least on the stock Perilli's which come on the CT. The article uses words such as "likely" to "can" describing what they might do and how Tesla might be using them, but I have been unable to find anything definitive into how/if the CT even uses any data from these sensors at all.

What I am really trying to get at is, when I go to get new tires, should i splurge and get a new set of these sensors to have them installed in the tires? If so, would the CT be able to read them out of the box (doubtful) or would I need to do something in a service menu or (worst case) at a service center?

These sensors seem like the could provide valuable and meaningful data so I am curious if they are even doing anything and should they be transferred or replaced along with the tire.

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[hemiarch]

Fuck yeah! Turkey timers

 

[ABILISK]

Interesting. Wonder how it knows anything about tire wear (tread depth) when mounted to the foam inside?

 

[Coolhandz]

Interesting. Wonder how it knows anything about tire wear (tread depth) when mounted to the foam inside?

It's not mounted to the foam. It is adhered directly to the rubber of the tire. Looks like there is a cut out in the foam where it is glued.

 

[ABILISK]

It's not mounted to the foam. It is adhered directly to the rubber of the tire. Looks like there is a cut out in the foam where it is glued.

Oh so the actual sensor is stuck down in the tread? That makes more sense

 

[Coolhandz]

Well, it's inside the tire. They glue it to the inside bottom just like the foam.

 

[Ruffles]

So, if you buy replacement OEM tires, do they come with these sensors? Is it only if you buy directly through Tesla? I like the factory AT tire and will replace it with the same thing. I want to ensure I get/keep the sensors.

 

[Coolhandz]

So, if you buy replacement OEM tires, do they come with these sensors? Is it only if you buy directly through Tesla? I like the factory AT tire and will replace it with the same thing. I want to ensure I get/keep the sensors.

I did a couple searches on Grok to get an answer. I thought they were only on the Pirelli AS, but apparently they are on the Goodyear AT as well for the CT. Grok says the sensors are vehicle agnostic though, they just have to be transferred or new ones need to be bought and installed in any aftermarket tires. I just don't know how much to trust it because I am not sure how the tech works.

 

[JCERRN]

I did a couple searches on Grok to get an answer. I thought they were only on the Pirelli AS, but apparently they are on the Goodyear AT as well for the CT. Grok says the sensors are vehicle agnostic though, they just have to be transferred or new ones need to be bought and installed in any aftermarket tires. I just don't know how much to trust it because I am not sure how the tech works.

But what even are the sensors? What are they measuring?

 

[hemiarch]

But what even are the sensors? What are they measuring?

I’m guessing they measure how many more payments they can debit for tire protection plan or provide Tesla a convenient way to know when tires in the luxe plan are due to be changed.

 

[Coolhandz]

From Grok i have attached a table. This is allegedly what all the sensors are capable of measuring, but it is not clear what data the CT uses. That, to me, is the biggest question. If they are only measuring pressure and that is what the CT uses, then may as well switch to just a regular TPMS and save a few bucks.

Parameter	Description
Tire Pressure	Tracks internal air pressure to detect under-inflation or leaks, complementing the vehicle's TPMS.
Tire Temperature	Measures heat buildup in the tire, which can indicate issues like overloading or friction.
Tread Depth/Wear	Assesses tire tread health and remaining life, helping predict when replacement is needed.
Tire Load	Calculates the weight distribution and load on each tire for better handling and suspension adjustments.
Camber Alignment	Monitors wheel alignment (tilt relative to vertical), flagging potential issues that affect steering and tire wear.
Road Surface Conditions	Detects road quality, such as roughness, slipperiness, or hazards, to inform driver assistance systems.

 

[JCERRN]

I’m guess they measure how many more payments they can debit for tire protection plan or provide Tesla a convenient way to know when tires in the luxe plan are due to be changed.

Idk that just seems to go against their “best part is no part” mantra… why waste money putting an additional sensor on a disposable item? Also, how could it measure tread depth from the inside? Is it a mechanical pin that sticks through and will get pushed when the tread gets too low? Seems risky for a ground contact item

 

[Coolhandz]

Idk that just seems to go against their “best part is no part” mantra… why waste money putting an additional sensor on a disposable item? Also, how could it measure tread depth from the inside? Is it a mechanical pin that sticks through and will get pushed when the tread gets too low? Seems risky for a ground contact item

I found a video with the CEO of Cerebrum. He talked about how they accurate to within a MM when measuring tread depth. That is a fairly big margin of error when talking about tires IMO. It seems like they measure rotational forces along with ride harshness to figure out tread depth. The only other thing i could think of is maybe some sort of sonar? Maybe measuring vibrations and how they travel? There seems to be a lot of gray though. How would the sensor know if it was mounted on AT tire with significantly more tread depth than a standard AS tire? Obviously Tesla has done their research before opting to get this sensor installed. If it was just for TPMS, then they likely would have just stuck with whatever sensors they are already using on the other models.

 

[JCERRN]

I found a video with the CEO of Cerebrum. He talked about how they accurate to within a MM when measuring tread depth. That is a fairly big margin of error when talking about tires IMO. It seems like they measure rotational forces along with ride harshness to figure out tread depth. The only other thing i could think of is maybe some sort of sonar? Maybe measuring vibrations and how they travel? There seems to be a lot of gray though. How would the sensor know if it was mounted on AT tire with significantly more tread depth than a standard AS tire? Obviously Tesla has done their research before opting to get this sensor installed. If it was just for TPMS, then they likely would have just stuck with whatever sensors they are already using on the other models.

Well they also use a separate valve/tpms sensor. Its purple.

 

[hemiarch]

Idk that just seems to go against their “best part is no part” mantra… why waste money putting an additional sensor on a disposable item? Also, how could it measure tread depth from the inside? Is it a mechanical pin that sticks through and will get pushed when the tread gets too low? Seems risky for a ground contact item

I’m just saying that the new plan the marketing department came up with is logistically quite complicated for service to have to provide and any automation is probably welcome. No part yes? But using the service centers to keep up with every single out of car-warranty tire in the wild that still has a Tesla commitment attached to it is also not that small of a thing. Even warranty cars don’t have “required” service intervals as far as I know. They just come in for complaints which some customers may not ever have .

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