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WorksheetsTire and Rim
Total questions: 19
Worksheet time: 10mins
P225 / 45 R17 94V
What is the width of this tire?
225 cm
225 mm
225 inches
45 mm
P225 / 45 R17 94V
How tall would the sidewall of this tire be?
45 mm
17 mm
101 mm
225 mm
P225 / 45 R17 94V
What is the load index of this tire?
R
17
94
V
Rim offset is the distance from the rim’s mounting surface to the rim’s ____________
Inboard edge
Outboard edge
Centreline
Lug nut mounting surface
What part of the rim profile is indicated by the black arrow?
Bead
Face
Mounting surface
Drop centre
VW, Audi, Mercedes-Benz, BMW all use this type of wheel fastening device
Lug nut
Lug wrench
Centre cap
Lug bolt
Why might you include a 19.5mm impact socket in your tool box?
Remove factory 19.5mm lug nuts
Lug nuts expand as rust intrudes under cosmetic chrome cover
They go onto 19mm lug nuts easier, obviously
None of the above
Bias ply tires are still commonly used
True
False
Which of the following Uniform Tire Quality Grading categories represents a comparative rating within a given brand?
Treadwear
Traction
Temperature
All of the above
The UTQG traction category rates a tire’s ability to accelerate, stop, and turn on wet and dry pavement
True
False
A tire shows a DOT code of 1221. What does this mean?
It was made in March 2021 (week 12)
It was made in December 2021 (month 12)
It has passed all UTQG inspections
None of the above
What do these symbols indicate?
PAX tire
Run-flat tire
Light truck tire
Commercial tire
What is hydroplaning?
Flying in the rain
Driving in the rain
Losing grip on the road as tire floats on water/puddle
Torturing someone
Winter tires are made from rubber that is _________ all-season tires
Harder than
Softer than
The same as
Blacker than
The red arrow indicates the small, zig zag slots in the tread blocks. What are they called?
Grooves
Sipes
Ribs
Tread
Why might one use nitrogen in their tires?
Less susceptible to pressure fluctuations due to temperature changes
Molecules larger than oxygen, less likely to leak through tire surface
Like to have the green valve stem caps on their tires
Convinced to spend the extra money by the dealership
Describe the tread pattern shown
Symmetrical
Asymmetrical
Directional
Winter
Why would you see a marking like this on a tire sidewall?
Directional tire - can only rotate one direction
Asymmetrical tire - can only be installed on rim one direction
Can only be used indoors
All of the above
Asymmetric, non-directional tires can be installed on either side of the vehicle
True
False
