I'm pootling along the lovely twisty A435 from Cheltenham to Cirencester on my Speed Triple. I'm doing 60-70 and I notice the back end wobbles abit, almost skips through mid-corner, most noticeably when you shift left to right or vice versa across the rough central part of your lane. Cut the speed down or stay on the smooth and it's fine. Tyre pressures are spot on. The tyres are Michelin Pilot Powers with 2.5K miles. A mate reckons the tyres are getting squared off and the wobble is due the squared 'edge' contacting the road as the bike leans into the corner. That makes sense but how bad do tyres have to be before this happens? And does this mean no more commuting? And do I have to get my knee down on every corner from now on?