I was out ferrying people around the other night. It was hammering down with rain and there were some massive puddles
The engine was warm, we stopped for a couple of hours and when I came to reverse out of the car park (the outside temp was around 9degrees C), there was an awful lot of vibration - similar to starting off in too high a gear) and a gruffness from the engine. At first I thought it might be the pads sticking a bit but having dismissed that idea I was careful to listen for it again the next time I started and drove off.
It did it again in the AM. Seems worse in reverse but then disappears after the engine has been running a couple of minutes.
Performance is good, no lights on. Just had an oil change and air/oil filter change.