As stated above, when it's real cold just take it easy. I think a combination of my own distraction and cold & old tires

were factors when I went down on my Daytona a few weeks ago.
Quote:
he puts up his bike as soon as it gets below 55 because since the tires were cold, they would remain cold
It your friend's choice to store his bike when it's 55 degrees...but I don't think there's any reason to do that. As long as you can stand the temperature and keep your mind focused on riding (not on being cold), you should be fine.
Will