The inboard wheel half is the half of a ______ wheel that houses the brake.

• A. One-piece
• B. Three-piece
• C. Two-piece
• D. Four-piece

Answer: (C)

The brake assembly is mounted on the inner part of the wheel, which is found in a two-piece wheel design. In this setup the wheel is split into an inboard half and an outboard half, and the brake components (caliper and rotor) are attached to the inboard half. This arrangement lets maintenance crews remove just the outer half (the tire side) without dismantling the brake itself, since the brake stays with the inner half secured to the hub. One-piece wheels don’t provide an inner/outboard split to house the brake, and while multi-piece wheels exist, the defining feature for where the brake sits in this context is the two-piece arrangement, with the brake housed in the inboard half.