They are a pain sometimes I agree,but I have learned the many years that I have run the wheat harvest with two combine's with singles and one with duals,In year's were it's muddy the singles would get stuck ten to one!!I can go through more with just a set of duals than singles with rear wheel assist!I run all with duals now,not just because of the wheat harvest,I like them in soybeans and 12row corn heads