Safety is not my biggest concern, sound is, I want to get away from any and all Harley riders, ricers, drunken parties, randomly yelling drunk and crazy people etc.
I've lived in dozens of different places, with many of the same complaints.
The #1 solution is to move up-market. Mopes and meth-heads are quickly priced out of nice neighborhoods.
Here are some other factors I've noticed:
Look for neighborhoods with lots of retirees and elderly. They don't cause many problems, but there will be increased late-night emergency vehicles.
Look for neighborhoods away from schools, all-night businesses, apartments, welfare housing, or drinking establishments.
Look for neighborhoods with well-kept homes and yards. Mopes and meth-heads don't spend time on yardwork.
Cruise the neighborhoods at night and look for areas that aren't lit up like a prison yard. The fastest way to have winos hanging out in the alley all night, light it up.
Move to a rural area. Country people aren't less likely to be mopes or methers, but their inconsiderate behaviors are easier to tolerate when their house is a quarter mile away.
Look for neighborhoods where people own their homes instead of rent.
Look for a house that's not on a thru-street.
Just to nit-pick one of your points. Historically, Harley Davidson invented the first motorcycle mufflers. In modern times H-D is the only company to make a public statement ~against~ motorcycle noise. It does seem their customers have an above-average rate of being attention-whoring, inconsiderate, show-offs though. Although from a distance I bet most people can't tell a Harley motorcycle from a Honda or Yamaha...
-Bob