Since my last post on 22 December, the road conditions (and my driveway :>( were in pretty bad shape, and I used the Autosocks on my wife's Aveo (X20 size works on Aveo or smart) for a number of days to get into & out of the sub-division where I live. The snowplows never came through a single time, so the roads were horrible. In all the years of driving in the midwest, and back & forth from Gary, IN to Ft. Rucker, AL......and in Germany......, I've NEVER experienced roads that were as bad as my neighborhood for about a one-week period that latter part of December. The Autosocks worked great....and kept me moving. I had tire chains on the back of my Mazda (2WD) pickup, with 200-lbs. of sand in the back and the rest of the bed filled with packed snow. Well, the truck barely made it through the neighborhood AND I ended up throwing a chain on the left rear! :>( The Autosocks, however, worked GREAT!! One morning, I even drove my wife to work (about 12 miles on snow & ice covered roads at 30 mph) with the Autosocks on the FWD Aveo, and I never had a problem. They would become uncentered in parking lots while turning at slow speeds, but would quickly recenter themselves once I returned to going straight for a couple hundred feet or so! I ALSO couldn't get up into my driveway WITHOUT them, but no trouble at ALL with them on. Also, there was a small article about a tire spray & the Autosocks in the latest Consumer Reports, and they reported very poorly on the spray, but they reported that the vehicle with the Autosocks "summited the hill many times!" They WORK.......plain & simple.....and they're a breeze to put on & take off. They are NOT approved for mountain passes or other areas where CHAINS are required, though!!! :>)