Classic advice on the use of bike brakes? In dry conditions, 80% front, 20% rear. In wet, even less rear. The rear is only used to "keep the bike in a straight line". The reason is that as you brake, weight transfers to the front of the bike, unloading the rear wheel... If you train yourself, you need to "plant" the front wheel first and then brake harder, if you grab a handful of front without doing that, the front will bounce off the bottom of the forks.
2018 Bonnie Speedmaster Jet Black with Highway pack (less bags) and rider footboards