Just got the rear M7RR down to the wear bars all bar a whisker on my SF. They're around 3300 miles, I reckon I'll squeeze 3500 out of the rear and its still performing perfectly. Feel remains excellent. Powering out of bends I know exactly what grip I'm getting from the road. Not a hint of vagueness. The white line squirellyness I thought I had detected was I think down to running pressures too low for the cold weather. Dunno. Anyway I upped them a little and that sensation has gone. I don't think that's a bad innings at all for such a grippy, sporty road tyre. Replacement has been ordered.