Pros: They went very easily. The YouTube video was very helpful. Cons: I used them *once* to go up and then down a poorly cleared road to a ski resort. They worked but were broken. It was on a mix of snow and ice and I never got over 40 km/h and stayed in 2nd and 3rd gear. I shot them at the bottom of a mountain (maybe only 7-8 miles?). They have completely disappeared. Now the material is torn and frayed. There is no way to use them again. Very disappointed. I assume they are only used for conditions like blizzard or heavy snowfall? Look for other options.