I have never dragged bottom except when I crossed a bridge that was in a dip in the road at way too high a speed. Bottomed out pretty hard then. And this was riding two up. I do keep my shocks set at the highest setting as I weight 250 pounds and my wife is at about 210. I have never hit bottom when riding one up under any circumstances except going over a speed bump once. Slowed down for them after the first and only time.No, never have hit bottom. I am on my 3rd Burgman with over 100,000 miles.
What setting is your rear shocks set on?
Now the tough question, how much do you weigh?
You have not adjusted the rear shock? What is it set on presently? It may be set on 1 and this could be your problem...I weigh 225 pounds. Tire pressure is at 36 psi. I've not adjusted the rear shock. It's hitting in the front. I'm horribly perplexed.