Originally Posted by
datlas
I almost always blame my engine, but in the case of yesterday's ride, my (crap how I hate this term!!) average speed was about 3.5 MPH slower than it would have been on my road bike, and since they both have the same engine, it has to be the tires/rolling resistance. The aero and weight are nearly the same as my road bike.
Decent chunky wheels will roll pretty well. I don't like them in a group rides, surges are definitely tougher, but they're not too bad on solo rides with a smoother pace. I've done solo metrics at a decent clip (18ish?) on 35mm G-One Allarounds when my road wheels were out of commission; I don't think that I've ever done that route faster than maybe 19.5 or so, with 18.5 being more typical.