I have a 2008 rzr narrow with a 2" racertech lift and 26 inch bighorns on stock steel wheels. The lift and tires have been on all summer with no problem. Last weekend went on a ride and bout half way through started noticing a rhythmic thunk form the front end area. The wierd thing is it makes no difference whether turning or forward or reverse. It only makes the noise at about a walking speed or less. Any faster and the noise isnt there. Makes no difference whether two or four wheel drive. I have shook rattled yanked and turned everything I can think of but cant duplicate the noise in the garage. Just wondering if any one has had similar issues.