Well, to cut the suspense...
The donuts were by far the
worst performing out of
7 sets of tires I tested on the weekend!
I was not expecting this. (Maybe, like some others, I was hoping those strange looking little donuts would have mystical properties...)
They fell short of even my crappy old Walmart snow tires, which don't roll worth crud.
I compared 7 different sets of tires at 51 PSI, and then boosted the donuts up to 70 for a second set of runs to give them another chance - they
still came in last.
The RE92's came in first.
At some point I'll post the details. Later, though! It's Turkey Day weekend in Canada. And lovely outside. I'm going bike riding with my nephew.