I don't have the Roadster, but I definitely would be in 5th gear by the time I hit 60 MPH. I wouldn't be cruising in 3rd. If your hauling butt to pass 60 to 85 in 4th is a real go getter, but for normal riding at highway speed, again, I would be in 5th. Here is a chart I posted for the R3T showing RPM relative to speed in MPH in 5th gear if your interested. I don't have a tach, so I worked this out from a variety of information that forum members provided me. 62 seemed to be the most accurate reference point. I would be interested in knowing if it holds pretty true for the Roadster as well.