I agree with labman and tweeker... Set it a little bit above, conditions permitting and go your merry way.
I hate when people complain about how terribly low speed limits are, then get the el cheapo special tires, get their cars serviced at pep boys, and drive too fast. Guess what, this isnt the autobann... People do pass on the inside without getting ticketed, people dont move right when going slow, there are bad potholes, etc., etc. If youre doing more than about 75 MPH, youre a hazard, IMO, and I feel no sorrow if you crash, just dont crash into me. When I see you coming, I move to the side so I can watch you blow out and flip (yep Ive seen that before), or skid sideways going down the road (seen that too), or a tire overheat (seen that one), or people up in front jam on their brakes for whatever reason, and youre going too fast and cause a pileup (My beautiful MB was destroyed by a joker doing this).
Be responsible, be courteous, drive to maximize fuel economy (a.k.a. be patriotic
), and be safe. I dont mind if police are pulling over speeders. I keep with traffic, keep it just under 75 on a 65 mph road, never get pulled over, know my limits, slow when the weather gets bad, and laugh when aggressive/fast drivers get pulled over. Let the towns make $$$ off of their idiocy.
Theres nothing wrong with driving fast. There is something wrong with driving too fast. Driving fast, 65+ is OK, IMO, driving too fast, so a detector, etc is necessary is another thing, and quite ridiculous. Maybe there is good reason in an area where cops will pull you for doing 2 over the limit; thats ridiculous, IMO, but most people arent actually in these situations, most buy a detedtor so they can do 85 or higher on a highway, which to me is just plain dumb.
JMH