I live and Switzerland and drive my 2003 Boxster S a lot in the snow and mountains. Good wintertires are a must, I use Pirelli SnowSport 240. Traction is really good, if you drive off slowly the first meters. I have the 255 rear tires. Once rolling it's a blast. I like driving in the snow, the Boxster handles really well. I don't have PSM and don't miss it, but some people like it.

I have (Porsche) snowcahins (Ebay, new $100) with me all the time but never used them so far. On several occasions I drove by BMWs (engine in the front) who couldn't get up the hill anymore, I had no problem.

Zürich