Having just gotten my Hayabusa I don't know how it handles in the rain, but I actually didn't mind riding in it on my Sportster. I had to do it in order to get home from work each week. Fortunately most of these long rides in the rain were on interstates, which I found to be safer than two lanes when it's raining. You slow down, stay in the right lane, and track along that high spot between the hydroplane gulley, that's created by right side vehicle tires, and the white line at the edge of the lane. The few cars and 18 wheelers that passed me on the left were far enough away that I wouldn't even get splashed. It was also exciting at night cruising through the bad weather with merely the instument and external lighting to simulate warmth, and the chortle of the engine as my companion.