Bunch of baloney if I ever heard it. I agree that it's a stupid thing they're doing; however, the bearings and axles in most farm tractors are over-engineered to handle the heavier loads and abuse that comes from farm use. The reason for the negative camber is because this farm tractor, like most, has a solid front axle with a pivot in the middle. Note how low the left axle (the one with the missing wheel) is with respect to the right. The axle is sitting all the way down on the axle stop on the right side. It's not likely to collapse. There is some danger of turning the tractor over, but with most farm tractors, there is much more weight on the rear axle than the front due to the weight of the transaxle, with it's solid casting, and the much larger rear wheels. They're made this way on purpose, of course, because they're designed for pulling and ground work applications and the weight is needed on the rear axle for pulling power.