Phil - The winter K60 isn't about just softer rubber, it's a proper high-silica compound winter tyre. Different beast to the normal all season K60. Frank is on the right track, these tyres are specifically designed to offer increased grip in low temperatures. Little bit of info about winter tyres from the AA: http://www.theaa.com/driving-advice/safety/winter-tyres-in-the-uk And an article about the K60 Winter in particular: http://defylife.com/travel-gear/motorcycle-equipment/winter-tyre-review-heidenau-k60-silica/ Edit: Sport Touring tyres aren't going to be an option for a Transalp, surely? Similar size rims to my old BMW and I recall being limited to dualsport or adventure tyres for that. Metzler Tourance is just about the best you could get for all-weather use on those rims, but there's no way in hell those thing would have even a slim chance on snow or off sealed roads, and they weren't particularly hot in the cold *ba-dum-tss* As for snow... a knobbly that handles snow and mud well is only going to make even bigger compromises on the cold wet roads. A perfect 50/50 tyre is a borderline myth at the best of times, throw winter into the mix and the idea of a perfect do-all dualsport tyre rapidly vanishes into the distance As far as I can tell, the K60 Winter is as close as it comes to a do-all tyre for the winter months. On road, off road, even a fighting chance at the slippy stuff with some common sense and skill behind it. ...Of course, I was too cheap to swap out on mine so I'm running my D606's through the winter. Slippy!