I decided to try out my heated grips this morning for the first time, outside temp was 5C when I left my place for a 25 mile ride.
I was wearing my GS gloves, these are warm weather gloves so predictably after a few miles my hands were starting to be come a bit chilly so I turned my grips onto the low setting - within a couple of minutes my hands were far too hot so I had to turn the grips off again and my hands became cold

I conclude that these new 2015 grips are not fit for purpose because my hands were either too hot or too cold, on my 2013 LC I would have been comfortable.
You would have thought that BMW would have made their heated grips work properly with their own brand gloves wouldn't you?
This experience has totally ruined my enjoyment of the new bike that I have had for barely 2 weeks - I demand that BMW rectify this problem at their expense or give me huge amounts of compensation