There were several factors when I went down; however, I believe the cold temperature of the tire, on a warn (but not bald) Metzler, with the lack of ABS, were significant factors to my offing on my 06 R3... Riding the same road on my 2011 R3R, with a Bridgstone Extendra Max on the rear, and an ABS system, is a noticeable difference...
Just my .02
B