Those of you that own a 2010 FLHTK (Ultra Limited): My Limited averages ~39 miles per gallon of gasoline. The fuel tank on the Limited has a 6 gallon rating. The range on my Limited is therefore ~234 miles. After riding ~117 miles from a full tank of gasoline, the needle in the analog fuel meter should be near or on the tenth (10) hash mark ( 1/2 tank) and the "R" or remaining miles should be displaying ~117 miles. The analog fuel meter on my Limited was on the zero (0) hash mark (Empty) after traveling 150 miles. I didn't have a problem with the "R" value. In fact, I found that the "R" value to be relatively accurate. I sent my Limited to the dealer in hopes of correcting the inaccuracy of the analog fuel meter. Unfortunately, not only did the analog fuel meters accuracy not get corrected but my "R" value is now also inaccurate. How does your2010 FLHTK analog and "R" fuel gauges perform? How many mpg's does you FLHTK produce? Use the hyperlink to get yourself a copy of the FLHTK fuel calculator. Input your data on your next fill-up. The calculator is an Excel spread sheet.