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WorksheetsTire, wheel, and wheel bearing fundamentals
Total questions: 10
Worksheet time: 6mins
The two basic functions of tires are to act as cushions between the road and the metal wheels and to _____ with the road surface.
provide sufficient traction
restrict cornering ability
produce a magnetic bond
create limited, or partial, footprints
True or False? Today’s automotive tires are classified as pneumatic and tubeless.
True
False
Which of the following does NOT typically reduce the rolling resistance of an automotive tire?
A relatively low vehicle weight.
Increasing tire inflation pressure.
Installing a tire with a relatively larger diameter and greater tread depth.
Accurate and efficient tire design.
Tire markings on the _____ of a tire give information about the tire, such as tire size, tire model, manufacturer, and inflation pressure.
tread
valve stem
interior liner
sidewall
True or False? All passenger car, SUV, and light truck tires have a maximum recommended inflation pressure of 25–30 psi.
True
False
If a tire has the DOT code DOT CXAH EVD0612, when was the tire manufactured?
6th month of 2012
12th week of 2006
6th week of 2012
6th day 2012
Which of the following statements about directional tires is not true?
Feature an arrow and the word rotation on their sidewalls.
Require a recommended inflation pressure of 15–18 psi (104–124 kPa) to widen their footprints.
Use a tread pattern that minimizes hydroplaning when rotating in a certain direction.
Feature an arrow that, when rotated to the top of the tire, must face the front of the vehicle.
A(n) _____ is threaded into the valve stem to allow air to be added to the tire when an air chuck is placed over the valve stem.
lug nut
inner bearing race
rivet
valve core
_____ are attached to the wheel rim to balance a relatively heavy section of the wheel and tire assembly, preventing vibration.
Plastic clips
Wheel weights
Additional valve stems
Wheel bearings
Technician A says an automotive tire’s beads are used to stiffen the tire treads. Technician B says an automotive tire’s beads are used to hold the tire’s sidewalls against the wheel rim. Who is right?
A only
B only
Both A and B
Neither technician is correct
