Just look through the wheels, a visual inspection is all that’s needed. When the braking material gets within a couple of millimetres of the backing pad then it’s time to think about replacing them…

On 17/03/2024 at 09:17, New11 said:

Does anybody know what is the original size ? And does the size differ between front and rear brakes ?

 

I just wanted to asses it by myself - if i.e. the original, brand new size is 10mm and I have now i.e. 2 mm then it is worn 80%.