Wheel Tech: 3 Piece Wheel Mounting Types

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3 Piece Wheel Mounting Types

A quick piece on 3 Piece Wheel mounting methods, as well as 2 piece wheels:

3 Piece Overhead Disk – Face mounted in front of the register.
3 Piece Under Disk – Face Mounted on the back side of the register. Allows lower offset.
3 Piece Sandwich Disk – Face mounted between front lip and rear barrel, popular on the BBS RS, but requires more sealing.

Most 2 Piece Wheels can use Overhead Disk and Under Disk Methods. The BBS RM has a unique integrated barrel and face which might qualify it as a sandwich mount.