The wide 67-72 sway bar attaches near the lower ball joint. When you turn the tire to lock the inner tire bulge gets close to the sway bar. With higher than 4 1/2” backspacing rims and wider than 245 or 255 tires, that distance gets closer and will rub/hit. Note: you can only run higher than 4 1/2” rims in the front with 16” or larger diameter rims.