DO NOT BUY THOSE! One of them exploded for me. (during doing a big.. oh wait.. I wasnt doing anything. It just exploded during rolling to home...) I used it at like 4 bars or so... They rip easily and they don't really stay at their place. I had a pair of 26x2,2 sized and they always touched the frame after doing a ... anything. Probably you won't have the same problems with the 2,0 version but.. ewww Don't buy the foldable in 2,2 size. It's garbage.
BTW I just asked it because one of my friends wants to buy a pair but they cost like.. 80$s? (for a pair) We don't know it they worth this price. If they wear down that easily than.. probably they dont. Oh.. and why did you use it only at the front wheel?