Swapping directional tires to opposite side

[thstone]

The negative camber makes the inner portion of the tire wear more than the outside portion. Swapping tires (really flipping them) puts what was the less worn outside portion of the tire on the inside - thus giving you longer wear from one set of tires. After flipping the tire, it is turning in the opposite direction. The tire must be removed from the rim in order to do this.