WHEELS, RIMS AND TIRES
The information herein covers wheels and hubs
for medium and heavy duty vehicles. Various types of
wheels (cast spoke or disc) are available and vary in
size, types and materials (steel or aluminum).
Figure 2. - Disc Front Wheel
Two different configurations of drum mountings will also
Inboard mounted drum will be secured to hub on
brake group side of hub (Figure 3). Inboard
mounted drums can be used with cast or disc
Figure 3. - Inboard Mounted Drum
Outboard mounted drum is secured between the
wheel and hub (Figure 4). Outboard mounted
drums will be used only with disc wheels.
Figure 4. - Outboard Mounted Drum
The upper view of Figure 5 illustrates another version of
an inboard mounted drum. This installation has a
second flange inboard of the wheel mounting flange.
The lower view illustrates a typical rear axle with
outboard mounted brake drum.
All cast spoke wheels (front and rear) will have inboard