Originally Posted by Amleto63
1.6 mm is not safe in case of heavy rain, indeed.
No statistics for my F10 being my first one, but I replaced my current summer tires (Dunlop SportMaxx RF) at 20,000 km with remaining 4.5 mm tread.
Thanks for your advice. I'll change earlier next time - probably at the 3mm tread depth - this seems to be a popular figure.