Should I buy new wheels as well?

[Neinris]

Originally Posted by Compeer

If i remember correctly the car had its ECU changed to suit the wheels at factory. With the right scan tool i was lead to believe you can change the speedo to suit the new wheel size. Could be wrong with the yaris tho but i know other cars you can do this.

Actually, it’s not my ECU/ECM, because I have a smart ODB gauge plugged in, which I can adjust the speed it displays, but I have it set to 100% and the speed it displays is accurate when compared to my GPS and the speed RADAR that I pass by on the way to work.

[Compeer]

Originally Posted by Neinris

Actually, it’s not my ECU/ECM, because I have a smart ODB gauge plugged in, which I can adjust the speed it displays, but I have it set to 100% and the speed it displays is accurate when compared to my GPS and the speed RADAR that I pass by on the way to work.

My obd2 display shows same as my speedo is reading, I have the JDM RS vitz dash installed that did not come with the car and I changed that second day I owned it so this could also be why mines a bit off.