The advantage of this system is that it provides an automatic warning of your tyre pressure. You might then think that you don't have to go to the service station every month because the TPMS is there to tell you when it's time to reinflate your tyres. But that's not what we recommend.
The TPMS has one drawback: it only activates when your tyres have lost 20% of their air, which is about 0.4 bar on average.
Why is this a problem?
Because it is considered that at this pressure level the tyre is already under-inflated and it is known that an under-inflated tyre leads to premature wear. If your tyre wears out prematurely, it will have to be replaced earlier than expected. That means extra costs.
As handy as this indicator is, it is still recommended to check your tyre pressure once a month to avoid having to replace your tyres prematurely.