I was a no-more-than-5mph-over guy for a long time, but 30 years of a mostly-highway commute have ruined that. Now I pretty much pace the traffic, which, when there's not a lot of congestion, is going to be about 10 over. 65 in a 55, 70 in a 60, that sort of thing.
Paul 68 Sport Fury ragtop 67 Fury III 4-dr HT 11 Charger Rallye 17 Challenger SXT Plus