Anyone have any experience with Spikes Spiders on a C-Max? I have them for my My 2002 Envoy which supposedly also couldn't take chains, and they work great. Very quick and easy to mount and unmount. However, they are ridiculously expensive ($550-600). I'm going to buy the SCC Z6 chains for the C-Max for the time being, just to have for emergencies (and to comply with Oregon's chain law), but when the Envoy is gone i probably won't replace it with another 4WD SUV and might want to go with Spikes Spiders or something similar on the C-Max.