I'm building another street bike for my father (his will be geared). While shopping for parts I came across some 35mm wide (650b) Velocity Blunt wheels that I was too curious about. I took them for a two hour, full speed run on my greenbelt path/trails. The rolling resistance didn't seem to change but the cornering squirm that I used to get with my 25mm wide rims was eliminated. This is my version of a cyclocross bike
Hope this purple is dark enough. I can usually put a second coat on to darken them up.