15+ mph over the limit most anywhere in the U.S. is asking for trouble...

5 to 10 mph over usually works out ok, but one should be aware that some states don't allow any tolerance for going over the speed limit.

Even in states that do allow some leeway, that leeway only applies if one does not admit speeding ... if one admits violating the limit, even if only by 1 mph over, can be ticked and will likely lose if they challenge the ticket...

Officers rely on ignorance ... they pretty much count on the driver admitting violating the speed limit ... officers generally dislike going to court ... it's a hassle and there's a decent chance the ticket will be thrown out; this is often why an officer will ask "do you know why I pulled you over?" and/or "do you know how fast you were going?" ... most people will basically admit guilt in answering such questions making the officers job easier, and giving them confidence that the ticket won't be challenged.

I've driven a lot in NY state and personally feel they should raise the speed limits on many of their interstate highways to 70 or even 75 (at least during summer months) ... in PA on the other-hand, 65 mph max is about right (=75 in reality) ... driving 80 mph on many PA roads is suicide LOL!

sdffa11- not paying an out state ticket is a bad idea ... you did the right thing to pay it.

Many states have reciprocal agreements with other states; some jurisdictions contract out with collection agencies.

Be glad you weren't required to post bond to guarantee payment of the ticket ... the police in many jurisdictions (usually small towns that rely on traffic tickets for revenue) can and will do that for out of state drivers; most AAA members can avoid that potential hassle and substantial delay by presenting a card guaranteeing bond by AAA for minor speeding violations.

Ron