Yep, me too. I took the 180 off my 96 900 SS SP and put on a 4.5 with a 170. I'm never going back. The rumours I had heard were true. The 170 handles quicker and is as much lighter (rim switch too) as buying $2000 mag wheels. I think the 180 is for bikes with over 100 hp that are racing at over 100mph. When the big boys won with the big tires it became a fad to have the race profile tires though they were a handling downgrade for street/canyon riding.