Tire and Wheel Theory Chapter 54 Page 783

Tire Types

How a Tire is Built

Radial Tire Construction

Tires and What They Do

Non-Directional Tires

Directional Tires

P 205/75 R 15 Tire Codes P=Passenger Tire 15= Rim Diameter R= Radial Tires R-Radial B-Bias Belted D- Diagonal Tire Codes P 205/75 R 15 P=Passenger Tire P-passenger Tire T-Temporary C-Commercial LT-Light Truck T-Truck 15= Rim Diameter 205= Section width in Millimeters 75= Aspect Ratio Height divided by Width (MM)

How to Read the Tire Information

Speed Rating All tires are rated with a speed letter. This indicates the maximum speed that the tire can sustain for a ten minute endurance without coming to pieces and destroying itself. Letter MPH P 95 Q 100 R 106 S 112 T 118 U 124 H 130 V 150 W 168 Y 188 Z 188+

Rim Offset Road side Inside Zero Offset Positive Offset Negative Offset Positive and Negative offset will change how a vehicle steers and turns.

Wheel Designation

Type of Wheels

Lug Nut Types This taper goes toward the rim to center the rim on the lug studs. What for lug cap separation. This will cause you to strip the lugs because they are smaller when the caps are missing.

Valve Stems & Caps Rubber Steel Pressure sensitive cap

Valve Core Long Short

Your Job. Complete chapter Questions 1-10 (review) and 1-10 (ASE-style). Page 794-795 Write on a separate paper and write out the complete question and your answer. ( do not write the other answer options). Complete the chapter worksheet (I will give it out). You may write on it. File all items in your note book. Notebooks will be graded in the future.