2000 F350 7.3 120k purchased new...CALLING ALL FRONT END SPECIALIST!! I have replaced upper/lower ball joints each side twice and hub/wheel bearing each side twice over the years. Not to mention I continually chew up the inside tread on a $225 tire. Is this normal for this truck. I know its heavy but$$$$$$$. I'm starting to think this may have something to do with my after market rims and tires (33x12.5x16.5). Any help?