I'd be interested to seeing a pictures showing the tread on the day tyres get changed
I suppose commuti g is a very different kind of riding to whatwe weekend riders do.i bet you are not in such a hurry as we are.
If you'd have asked me a few days ago I could have, but I got about 13,000 miles out of my Bridgestone 023 rear before it got right down to the wear markers.