Took the M300 out for a short ride, really just to test the CATEYE speedometer it came with. Put new batteries in it, down loaded the manuel for using it. Set up was very easy, had a hand held GPS with me to check it against. Both matched perfect as far as speed went, ( only thing I really was checking ). Well the bike seem to spin out at around 28 or 29 MPH. I was going down hill, and went faster, but could really only peddle to around 29 MPH. Bike has 42 x 11 gearing with 26 x 1.6 tires, does that calculate about right ? Just wondering, Richard