If you're riding with Harley guys that have an 09 or later I wouldn't go by that that's when they went with a 6 gallon tank and a six speed transmission you're going to run out of gas before they do
There’s always an aftermarket 103 (twin cam or Evo) in the bunch that can’t make 100 miles between fill ups, at least around here.
That is also why I referenced the fast conservative math technique for figuring YOUR range. Not many folks have a 200 mile ass anyway, but you should NEVER let group mentality carry you somewhere you should not be, like out of gas. Topping every stop is the best strategy to not be the one that causes the unscheduled stop.