Join Date: Feb 2010
Location: Midlothian, VA, USA
It sounds like your rear preload is probably set too high (or your front is too low) if it handles better with a passenger than without.
I'm assuming that you set the preload to 2 riders when you are riding 2 up, and 1 rider when you are riding alone? Go through the menu and see what the 2 rider preload is set for (1 - 24), and what preload the single rider is set up for (1-24).
I'm 210 lbs with gear and have measured the front and rear sag with just me on the bike, and then with my wife on the back. I ended up with a preload of 14 when I'm alone on the bike (33% of full travel sag), and a preload of 24 with my wife on the back (33% sag). In order to achieve a sag of approx 33% on the front, I had to crank the preload all the way in (clockwise), and then backed it out 3 turns.
2015 Multistrada S / FULL MIVV exhaust / Rexxer ECU flash
When life throws you a curve, lean into it and grab a handful on the way out!