In Option B, the ribs are reshaped with two design changes to provide the tool clearance and improve the strength and stiffness.

• The angling of the ribs around the bolt holes provides the needed tool clearance.

• Thickening the ribs provides an increase in strength and stiffness with a resulting improvement in durability.

• Reducing the height of the ribs provides more clearance and reduces interference with the inner diameter of the wheel hub.