Which NFL team is the best percentage-wise in the Regular and post-seasons since their inception into the NFL or any League that was swallowed by the NFL (AFL, AAFC...)?

Regular Season: Dolphins - .593
Post Season: Panthers - .667
Total: Dolphins - .588

It used to be Miami, but that was before the Wannsuck era. They've had like a total of 3 losing seasons and one .500 season since their inception.

If you look at the postseason as a separate beast, the best record would more than likely be San Francisco (5-0 in Superbowl).

For the record, I'm talking off the top of my head and not looking any of this stuff up. I'm lazy.

i think it is the san diego chargers and the colts and the patriots those teams are always on top of their game

regular season has to be colts
and i hate to say it but patriots probly have best post season

COOOOOOOOOOOOOOOLLLLLLLLLLLTTTTTTTTTTTSS...