welcome !
Id have to agree that seems a bit low...although you can go lower...
depends on what your draggin' behind or how far your foots in the
pedal on the right.
Ive seen as high as 20 (68mph, cruise set, interstate traveling)
ive seen as low as 12 (towing 6k lbs, interstate, running 82+ mph)
around town i typically see 13-15 (depending on how much
stop light to stop light fun im having)
dont trust that over head display...its been more often refered to
as the lie-o-meter than anything else...for the most part mines
w/in a 10th or 2 most of the time.