Wheels, Tires and Hubs

270103j Parts Technician Wheels, Tires and Hubs Material Identification and Calculations First Period

Figure 1 - Bias-ply construction.

Figure 2 - Bias-belted construction.

Figure 3 - Radial-belted construction.

Figure 4 - Metric/imperial tire size format.

Figure 5 - Wear, traction and temperature ratings.

Figure 6 - Side wall markings including load and speed ratings.

Table 1 - Tire speed rating letters with corresponding speeds.

Table 2 - Tire load index rating numbers with corresponding weights.

Figure 7 - Load rating.

Table 3 - Tire load range rating letters with corresponding plys.

Figure 8 - Tire manufacturers date code. (Photographed at Smart Automotive)

Figure 9 - Space-saver spare tire.

Figure 10 - Tread block design.

Figure 11 - A stamped steel wheel.

Figure 12 - Safety beads built into rim design.

Figure 13 - Alloy wheels.

Figure 14 - Markings on a wheel indicating direction of rotation.

Figure 15 - Wheel specifications stamped on rim.

Figure 16 - Rim offset.

Figure 17 - Valve stem, Schrader valve and valve stem extensions.

Figure 18 - Wheel mount flange and studs.

Figure 19 - Wheel nuts. (Courtesy Toyota Canada Inc.)

Figure 20 - Tube type tire and multi-piece disc wheel.(Courtesy Freightliner of Canada Ltd.)

Figure 21 - Tubeless tire and disc wheel. (Courtesy Freightliner of Canada Ltd.)

Figure 22 - Tire tread designs. (Courtesy Freightliner of Canada Ltd.)

Figure 23 - Two styles of split rims.

Figure 24 - Use care when off-loading inflated tires.(Courtesy Accuride Corporation)

Figure 25 - Cross-section of a five-piece rim assembly.(Courtesy Terex Americas - A Terex Company)

Figure 26 - Spoke wheel and hub assembly.(Reproduced with permission of Ford Motor Co.)

Figure 27 - Six-spoke wheel with a multi-piece rim assembly.(Courtesy Freightliner of Canada Ltd.)

Figure 28 - Mounted hardware for spoke wheel.

Figure 29 - 10-bolt disc wheel.

Figure 30 - Hub designs with brake drums attached.(Courtesy General Motors of Canada Limited)

Figure 31 - Installed spacer and samples used in a dual tire application.(Courtesy Freightliner of Canada Ltd.)

Figure 32 - Truck tire size.

Figure 33 - Tire cross-section with measurements defined.(Courtesy Freightliner of Canada Ltd.)

Figure 34 - Truck tire markings.

Figure 35 - Wheel stud and tapered nut. (Courtesy Freightliner of Canada Ltd.)

Figure 36 - Inner cap nut used to retain the inner wheel on a dual arrangement. (Courtesy Accuride Corporation)

Figure 37 - Flange-style wheel nut. (Courtesy Freightliner of Canada Ltd.)

Figure 38 - Hub-piloted dual wheel arrangement with flange nut installed.(Courtesy Accuride Corporation)

Figure 39 - Static imbalance. (Courtesy Toyota Canada Inc.)

Figure 40 - Dynamic imbalance. (Courtesy Toyota Canada Inc.)

Wheels, Tires and Hubs