Two years ago, got caught in a snowstorm outside jasper in late September, my tow vehicle is a gmc duramax, trailer is a 27 foot cougar fifth. It snowed a foot, while we drove to jasper up the icefields parkway, something I will not do again. I drive truck for a living, but needed four wheel drive just to control my rig in ever deepening snow. Been pulling fifths for thirty years, I was surprised at how much the trailer wanted to push the truck around, kept the speed down, watched cars ditch several times, made it to jasper and woke up next morning to a foot of fresh heavy snow.
Don't do it, unless you're VERY experienced with this stuff.
