I just fitted a Bridgestone Exedra Max 240/55 to the rear of my Roadster, replacing the original Metz. It's too early to predict how long it will last.
I'm still running the original Metz on the front, and it's 50-60% worn. Everyone seems to praise the handling with the Bridgestone, but I don't like it as much. I need much more counter-steering to get the bike leaned over on the Bridgestone, compared with the Metz. I wonder if the half-worn Metz front tire is the problem. I plan to fit the 140/75 Commander II up front soon, hopefully the steering will lighten up then.