new tires for the 100 - the agonizing decision (1 Viewer)

[dclee]

Do these tires work with the factory TPMS? I'm not sure if your model has that so pardon my ignorance.

I was looking for replacement tires on Costco and they did not carry anything for the TLC, I'm just curious about the cost of replacing all of them when the time comes...

My truck does not have that. Is the TPMS configurable? That way you could set a higher threshold pressure, since you have to run these tires at a higher PSI rate.

Well, either way, I don't see why it would have a problem, at worst it might not warn you until later than you would like with the higher pressure tire.

 

[gajjuauf]

Yes, its configurable, to an extent, for this exact reason - you can get new tires and have to update it.

What I'm not sure about is how i works with the factory tires versus aftermarket or non OEM tires. Not an urgent issue for me though, my tires should last a while.

 

[CrusrDug]

There's actually a procedure to reset it when you get new tires. I looked it up the other day in the manual when after checking my spare it only had 18lbs in it. Something's not working somewhere on mine. I haven't done it yet though.

I'm kind of afraid to find out because after Les Schwab tire scratched up my wheels so bad when I got the tires put on, I have a feeling they busted the sensors off somehow

 

[dclee]

What I'm not sure about is how i works with the factory tires versus aftermarket or non OEM tires. Not an urgent issue for me though, my tires should last a while.

Why would it be any different? Tires are tires. OEMs like Toyota frequently change tire brand on the same model line from year to year. I think the 100 has at various times and in various locales been sold new off the dealer floor with both Dunlops and Bridgestones, maybe others as well.

 

[cary]

Do these tires work with the factory TPMS? I'm not sure if your model has that so pardon my ignorance.

I was looking for replacement tires on Costco and they did not carry anything for the TLC, I'm just curious about the cost of replacing all of them when the time comes...

The tires have nothing to do with the TPMS.

 

[gajjuauf]

thats good to know, any idea how the TPMS works, technology wise?

 

[cary]

thats good to know, any idea how the TPMS works, technology wise?

It works one of two ways:

1) It measures the pressure in each tire by using a pressure sensor for each wheel a) attached by a band to rim, or b) that in integrated as part of the valve stem; or

2) measures the revolutions per mile of each wheel, checks it against sensors to determine if the vehicle is turning or not, and then will calculate if one tire is smaller than the other, translating that into an under inflated tire.

It is my understanding that some of the pressure sensor systems do not measure absolute pressure, but instead, pressure differential between tires.

 

[NMuzj100]

thats good to know, any idea how the TPMS works, technology wise?

... Most of Toyota’s new vehicles come equipped with a direct system, and the tire pressure monitor ECU is located in the glove box. A low-tire-pressure warning light is located on the instrument panel next to the speedometer.

“Most of our technicians know how to use a scanning tool for recalibration,” says Buner. “For the entry-level techs, this is covered in classes that deal with electrical components. Our journeymen technicians already are accustomed to using the tool.”

Toyota states that the “unique TD number must be manually entered into the ECU using a diagnostic tester whenever the tire pressure warning valve/sensor is replaced or after a tire and wheel are exchanged.” ...

... Lexus and Toyota models must have each sensor’s ID code entered into their ECUs using a dealer-only OBDII scan tool.​

... “The Land Cruiser is the only Toyota vehicle with a ‘Main/2nd’ switch,” Buner says. “This allows the owner to have two different sets of tires and wheels with two different sets of tire pressure warning valve/sensor ID numbers. For example, the second set might be used for snow tires. Therefore, we would register both the main and a second set of ID numbers using a scan tool ...​

from Tire Review Online

also Tire Review Online : TPMS 101

 

[NMuzj100]

Interesting thought from another board ...

Is there a way to disable the TPMS? I don't want to spend a few hundred dollars for fancy stems when I get my snow tires with steelies for the winter.​

Contain the 4 TPMS units in a sealed enclosure of your choice under approx 32psi. Keep that enclosure somewhere in your car. Long as the enclosure holds pressure, the problem should be solved​

 

[gajjuauf]

I thought this was interesting, from the TPMS 101 link posted before. Seems like there may be a link between TPMS, tires, and wheels for the TLC...

FROM TPMS 101
To simplify the work for the customer, when Tire Rack sells a TPMS-equipped wheel/tire package for a Lexus or Toyota, they include each sensor’s ID code on the customer’s invoice and in their database so that the customer can go directly to the dealership and get the ID codes entered into the vehicle’s ECU. Still, the customer has to make a separate trip.

 

[2003landcruiser]

i did do a search and could not find a definitive answer. would changing stock tire size from 60 to 65 series (i think about an 1" difference) hurt the rig? is it hard to recalibrate?