I don’t remember what mine is exactly. Somewhere between 45-49 I think. Anytime I go into the 40s I start feeling a bit nervous, though I’ve never had any weird handling sensation from the bike.
Back in January I was curious about my 2012 numbers–I think I recall WKO+ telling me that I spent more than half an hour at 40mph+ over the course of the year. I think it was 5+ hours above 30 mph.