The pad-wear problem can result from diligent washing of the car and wheels.
BUT crucially, if one then neglects to also immediately go for the necessary fifteen minutes or more of enthusiastic blow-dry for the underside and, most importantly of all, to polish the instant “shampoo rust” off the discs.
If the discs have a nice even light-brown coating beginning to burrow into the meat of the disc, that works like emery-paper to take off some of the pad surface quicker than normal driving. It can be useful for de-glazing the pads if one hardly ever uses the brakes (I’m guilty here), but I never give it a chance to penetrate any deeper than a faint haze after the wash.
So far as I’m concerned, the Enthusiastic Blow-dry is mandatory! After all why else do we indulge ourselves with such an entertaining car?
Unfortunately leaving the car outside, exposed to the weather has the same effect. I needed to skim/resurface my NC’s rear discs after a fortnight parked at Gatwick. Now I cover the wheels if left outside for any length of time.