New for 2015, the new Bathurst model from TSW is the latest in our line of wheels that employ exotic rotary forging manufacturing technology. Rotary forging produces wheels that are uncommonly lightweight. That's because the manufacturing process alters the molecular structure of the aluminum alloy in a way that increases its strength. That strength allows TSW engineers to reduce the thickness of the outer barrel, reducing rotational mass. Even the largest Bathurst size, 20x10.5, weighs less than 25 lbs.