Joined: Aug 2010
Posts: 12,689
Likes: 2,094
From: Madison, WI
Bikes: 1961 Ideor, 1966 Perfekt 3 Speed AB Hub, 1994 Bridgestone MB-6, 2006 Airnimal Joey, 2009 Thorn Sherpa, 2013 Thorn Nomad MkII, 2015 VO Pass Hunter, 2017 Lynskey Backroad, 2017 Raleigh Gran Prix, 1980s Bianchi Mixte on a trainer. Others are now gone.
Often they will. That is why most touring bikes have longer chainstays, you need to get the panniers back far enough so that you avoid heel strike, but as far forward as you can to minimize frame flex for handling to avoid the tail wagging the dog feel.