1) It is hard to predict when a tire should be removed from
service based on its calendar age alone. It is recommended that any
tires in service _____ years or more from the date of manufacture,
including spare tires, be replaced with new tires.
8 years =6
10 years =5
12 years =4
15 years =3
2) Every tire in North America is required to have a DOT
(Department of Transportation) number. This will provide the
information of where it was made, when it was made and what kind of
tire it is. The last 4 digits will tell us when the tire was made.
If the last 4 digits of the DOT are “1208” , what does
that mean?
It was made the 12th month (Dec) 2008 =1
It was made 12th week (March) of 2008 =2
It was made the 12th day of 2008 =3
It will be made 8th week of 2012 =0
3) When installing winter tires, where should they be
installed?
On the front axel =9
On the rear axel =2
On all 4 tires =6
On the drive axel/axels =7
4) If by chance you had to install snow chains on your vehicle,
where would you install them?
On the front axel =6
On the rear axel =5
On all 4 tires =8
On the drive axel/axels =3
5) At the end of every tire size there is a service description.
In the size P225/60R16 97T, the service description would be 97T.
What does the service description tell you?
Tire size =4
Speed rating =1
Height of tire =5
Width of tire =8
Speed and load rating =0
Mileage of tire =3
Load and tire class =7
Tire rating =9
6) The PSI, or Pounds per Square Inch, plays a large impact on
handling characteristics and fuel efficiency. How do you know how
much air to put in your tires?
Until the look full =9
The amount written on the tire =1
The amount on vehicle placard =0
Leave the pressure where the tire dealer left it =2
7) Tires don't typically carry the weight of our vehicles, the
air inside them does. There are three basic elements which
determine the load capacity of a tire: the size of the air chamber
formed between the tire and wheel, the strength provided by the
tire's construction to hold air pressure, and the amount of air
pressure actually in the tire. There are some run flat systems that
will allow you to drive on a flat tire or with Zero Pressure. How
does the Auxiliary Supported Run Flat Systems?
Rubber inserts placed into the sidewall =9
Heat resistant cords =0
Attached support ring =8
Added steel belts =7
8) If you happen to need a tire repaired, how big of a hole is
too big?
1/8 of an inch =8
¼ of an inch =2
½ of an inch =5
1 inch =6
Tires should never be repaired =3
Any size can be repaired if done properly =1
9) The UTQG (Uniform Tire Quality Grade Standards) gives
consumers useful information about what?
Quality and Grading scores =0
Rating on quality =3
Tread wear, Rubber compounds and Speed rating =7
Rolling resistance, Rubber compounds, and mileage =2
Tread wear, traction and temperature =8
10) It is ok to inflate tire with:
Oxygen =4
Nitrogen =9
Carbon dioxide =7
Both A and B =8
All the above =1
If you think you answered the puzzle you can find out at
Geochecker.com.