I came across this article today and on the face of it looks interesting. You may also have seen James Witham as the guy who turns up to drive the Yamaha R1 in the very funny video. Here is the link to the tyre test.http://www.visordown.com/motorcycle-top-10s/whithams-five-best-winter-tyres/14795.html#historysub The same magazine includes the following endorsement of the Bridgestone
http://www.visordown.com/product-news/haslam-endorsement-for-bridgestone-bt-023/15305.html

Regards,
K-BIKE