How is temperature measured ? TPMS ?

[Jibbajabba]

What TPMS are they installing?

Avoid the ones inside the valve cap... they are unsafe. Go for the ones that are incorporated into the valve base.

Also, some connect to your iPhone over Bluetooth (more expensive type), others connect to a cigarette-lighter-based display over RF (these are cheaper).

The only downside of TPMS BTW is that you can't rotate the wheels front-to-back very easily (though if you have staggered wheels you can't do that anyway).

Tried to find out. And switching around won’t work anyway as I indeed have staggered ones. My e63s came with 295 at the back and 265 at the front.

 

[markjay]

Tried to find out. And switching around won’t work anyway as I indeed have staggered ones. My e63s came with 295 at the back and 265 at the front.

Please also note that my original post was regarding after-market TPMS system, I.e. not re original factory-fitted one.