I was on a track day at Brands recently on my monster. I was sliding around a little bit and have changed the tyres now but I was doing around 58's. I'm not really sure because I wasn't timing but I was slowly catching a guy on a Tuono and he was in the 58's.
Seeing as I had to take it easy in Clearways, Paddock Hill and Druids (nearly highsided here, went down the hill on the grass sitting on the tank after the rear came around!) I know there's plenty more to come