Ive got a good friend that purchased PM rims and tires as a package in Nove 2010. He still has not been able to get the bike to be right since purchasing them. The history is, he bought the wheels and tires as a set. a 21" front, and an 18 x 200 rear. The local dealer installed them and the front rubbed through his paint, and the rear was very squishy and wobbly. Unsafe levels of squishy. So after a few weeks of haggling, PM set a new wheel with a 180 tire. He had it installed and right away, the shuish was back. He called Metzler who makes the tires and they told him they dont recomend thier tires for baggers. ( not sure if that tire, or any of thier tires) So needless to say, he is bummed and after nine months, i dont blame him. My question is for all the guys out there with 18" wheels in the rear. What size tire and what manufacturer are you using? He is thinking this might be the only way to fix it is to go to a new tire manufacturer.