Faced with the prospect of having to buy new tyres for the old girl. I've been looking at a pair of reasonably priced Michelin Pilot Powers for my VTR 250. However. The OEM tyre size on the rear is recommended as 140/70 17 where as the tyre available is a 150/60 17. After doing a bit of investigation, there are a few people claiming there are no huge disadvantages apart from losing a small amount of top end speed but the extra width gives added grip which apparently more than makes up for it. Thoughts?