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  Topic Review (Newest First)
12-18-2019 05:01 AM
honegod i have a 2019 Yaris LE US spec. @ 1050 miles.







the dealer did check pressures and reset the TPM.
12-17-2019 03:12 PM
honegod another opinion.


i understand the TPsystem is based on the antilock system so it does not care what actual sizes the tyres might be in an absolute sense, it does not measure the actual tyre sizes it is looking at the reletive rotation speeds of the tyres to each other.
so you could put 4 different size wheels on, tell the TPsystem they are correct,and it will tell you when one of those mismatched tyres has lost enough air pressure to make it spin faster than the others according to how you set the group of 4.


i just had a set of 195/55-16 put on and the TPM light is on.
im going in for my 2019s 7 month this afternoon and the dealer should check pressures and reset the TPM, I shall report.
08-18-2019 10:01 PM
iAoperator yes it will work just fine. I have 17x205x50 with lowered suspension. your wheels have no pressure sensor it has tire diameter sensors outside- any tires can be reset- there button for that- read the manual
03-16-2019 08:56 AM
TorchMini You can also do what many of us do in the winter- downsize the rims to 15 inch and swap wheels for snow months. I bought four winter wheels with 195/60/15 Michelin IceX tires since I live in big snow/big pot hole country, and I plan to keep my Yaris for many years.
11-21-2018 05:39 PM
joelg1988
Quote:
Originally Posted by rickined View Post
This is what I know -- 2016 Scion iA has a weird tire size. There are only a few all-weather tires made for this car in the standard size P185/60R16 and they can be a bit hard to find, but not impossible.

I also know that the iA doesn't have a TPMS system per se -- there's no TPMS unit in the tire relaying tire pressure to the car computer. Instead, the car uses the ABS system to check on the diameter of the tire to know when the tire needs more air (or, I've also read that the system can trigger if the tire is over inflated).

I want to add snow tires to my 2016 iA. The closest fit is P195/55R16. It's about a 1.2% difference, which is pretty negligible.

But what I don't know -- will the different sized snow tires work properly with the tire pressure system? my sense is that it shouldn't be a problem, but I don't want to drop a ton of money on new wheels and tires and not have it work with the scion's version of the TPMS system.

Thank you in advance!

This forum is pretty comprehensive. I tried using the google to find out this info but I couldn't find anything that got me all the way across the goal line.
Many other people here have changed to 195/55 or 205/55. Not winter tires, but regular all weather tires. If you read those threads, no one has complained about the tire pressure warning not reading the tires correctly. One thing I want to mention to you: Mazda and/or Toyota CHOSE to put 185/60 tires on purpose so you have to go to the dealership to get the tires (or tire if you have a flat). Our vehicles have standard 16x5.5 wheels that would fit many many tires and vehicles. They could have put 205/55 or 195/55, but CHOSE not to. Feel free to buy whatever fits your budget/needs. My automotive knowledge of several years can almost guarantee you the pressure monitor will function properly.
11-20-2018 07:30 AM
rickined
Winter Tires 2016 iA

This is what I know -- 2016 Scion iA has a weird tire size. There are only a few all-weather tires made for this car in the standard size P185/60R16 and they can be a bit hard to find, but not impossible.

I also know that the iA doesn't have a TPMS system per se -- there's no TPMS unit in the tire relaying tire pressure to the car computer. Instead, the car uses the ABS system to check on the diameter of the tire to know when the tire needs more air (or, I've also read that the system can trigger if the tire is over inflated).

I want to add snow tires to my 2016 iA. The closest fit is P195/55R16. It's about a 1.2% difference, which is pretty negligible.

But what I don't know -- will the different sized snow tires work properly with the tire pressure system? my sense is that it shouldn't be a problem, but I don't want to drop a ton of money on new wheels and tires and not have it work with the scion's version of the TPMS system.

Thank you in advance!

This forum is pretty comprehensive. I tried using the google to find out this info but I couldn't find anything that got me all the way across the goal line.

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