E90 idrive service oddity

[Welshbeef]

I tend to flick thorough the idrive service menu fairly frequently ie at least weekly (partly to pass the time in congestion and I like checking things out)

Anyway when I got the car brakes were brand new front and rear ditto pads. Anyway over the last two years they have been decreasing milage until change is due. They started on 90k.
So last week fronts were showing just over 40k miles to go and rears just under 40k. However today bad traffic do I flicked through it again and saw something very odd - rear brakes 15k miles!!! Fronts the same and no track day in between. I kept checking it as I went along but it didn't change.


How on earth can it decrease that quickly???


I'll check it out tomorrow.

Also I physically checked the discs tonight and they still look like new plenty of meat left on the pads.
I'm assuming BMW dealer changes pads and discs if computer says yes regardless of if they need changing or not then customer pays!!

[steve6304]

The Pad sensors only start to give an accurate reading once they are in contact with the disc, then the reading should change slowly, also, the only way you would get 90K out os the pads is if you did not use
the brakes !! it is simply a default value in the system.

[Welshbeef]

So if they will last 15k miles more then they will have done c35k miles.
I guess looking at the discs in 15k I'd only need to change the pads