Range on Demand
Speaking from a complete lack of experience with these bikes I thank all of you for your experience and opinions. Cat, I wonder if you have ever used your 660s rallye tanks for bridging the gaps on longer segments between fueling points?
I don't know the 660s fuel efficiency but I think the 640s range would jump into the 4-500 mile department. And although you make a great point to not fill them if you don't need to, especially in technical stuff, having them sitting back there would be a big comfort to me in the lonely places of the world (someday...).