I take that back....Its been cold here, -35c most of the week. I ran out to the grocery store and back last night, and in the course of doing so I went through a small snow drift in the parking lot while doing about 35km\h, which produced a small 'bump', but no more than what would be encountered by hitting a speed bump at the same speed. On the way home, there was a thumping noise coming from the rear passenger side. I hopped out to have a look, but didn't immediately see anything. Upon further investigation this morning in the light of day, I discovered that I sheered the mounting bolt right off the top of the shock body where it passes through the frame rail. Not sure if the cold was a factor, but I'll be sending the unit into Bilstein for a warranty claim just as soon as I can get it off the truck. fml :frusty: