Yes, thanks, @Wubrew. In fact, I wanted to mention in my deleted Birdy review that these can be used to dial in the ride. This is important for those folks who are leery of suspension bikes for efficiency loss reasons. (However, I would be surprised to see if it made any difference whatsoever in terms of the time it would take to complete a 10 or even a 100 mile trip.

Has anyone actually experiemented with the mean trip time using different bikes? I can't really tell if it's taking me longer to get to work on my Birdy with the big fat winter tires that I have on it. (Relative to the Stelvios I bought with it). I don't think I'll ever know because the computer has to be reset for the smaller tires, and there is a bigger margin of error in tire size calculations.

Didn't you say you had a Birdy Black? It would be great to get a review of that!