I have one of those also, there is no traction when it is cold, even when it is 100 degrees outside. It is my mounted spare, I think I am just going to have to install on Sling II and just melt it down. It is that or just throw it away.
I have to agree that this time of year with our highs only in the 70's the traction is not even close to what it is the rest of the year - fortunately around here we are in the 100's most of the year and this tire seems to have been made for hot conditions - - like I said above the Nitto Motive all season tire I tried didn't make it past 10k, on the other hand I have had the Motivo's on the front for over 20k and they are holding up great