About Asymmetrical Rim

The rim is drilled off center. These make the wheels stronger by allowing the spoke tension to be similar between drive-side and non-drive-side spokes.

Difference between 3k 12k and ud carbon, Matte VS. Glossy finish for bicycle rim

3K weave is better because it is not as brittle as the UD. It displaces some of the pressure because it is not as hard as UD. However, this doesn't mean 3K is always better, because UD generally gives rim the most strength and allows the engineer more control in the layup patterns to optimize the rim structure.