Every truck/trailer combination is just a little bit different. For instance, having the hitch one inch difference in placement in the bed in identical rigs can make a difference in turning radius capabilities. That being said, I have a shortbed Ford, pulling a 38' Landmark, and I can turn pretty close to 90 degrees. Do I want to do that very often? - NO! The trailer cap is within a half inch of the truck cab when I'm turned that tight. Besides, on a paved suface a turn that sharp puts a lot of pressure on the inside turn axle and suspensions parts. By the way, I have a slider hitch and have never used it in three years.