Well said
Good reply.
In one.

The warranty is there to fix serious defects. It is not there to act as a catchall to restore a bike to 'as new' as and when the owner feels like it. This is not unique to BuMW.
I have recently taken out Pidcocks extended warranty for mine.

It covers major defects but not corrosion of body parts. At £293 I thought it excellent peice of mind for my 3 year old 1200.
No aftermarket warranties carry corrosion warranties(to my knowledge) In my experience the odd nuts and bolts that do corrode,................ just buy new one's for the few pence they cost....but then why bother.
The bolts on my calipers have corroded, hardly surprising when I have changed alloys to wires on dozens of occasions. I will replace the bolts when I sell the bike.
I don't see how anyone can expect anyhting made with metal or alloy not to corrode over time and this can be slowed up dramatically by applying ACF50 or similar or even a spot of grease into bolt holes etc.
I have had several warranty claims on my bike including gearbox (5k miles) fork seals (12k) front cover (19k and just out of warranty, Drive shaft seal (23k miles and 6 months out of warranty with 50% contribution from BMW). Maybe it's the way you ask them for help. For sure Beemers rust less than any Japanese bikes i've owned, and yes the quality of the metal is not as good as it used to be, but bikes are in a competitive market.............. and metal is not a cheap commodity anymore.
Being in sales and marketing there are ways of getting people to help you and ways to ensure you don't. Typically if you shout, scream and rant you get nowhere in my experience. In my expereince if you ask for something reasonable and you ask in the right way, you will nearly always get a result
