CDX Medium/Heavy Duty
Commercial Vehicles
Systems(52 questions and
answers)
have two or more layers of casing plies and cord loops running radially from
bead to bead.
Radial-ply tire
As such, radial tires separate the mechanical action of the tread and
sidewalls—which results in a better contact patch formed between the tire
and road. Consequently, radial tires have better fuel economy.
portion of a tire that touches the road surface
Contact Patch
What are the tires fours functions ?
Supporting the vehicle load
Transmitting braking & traction forces to the road surface.
Absorbing road shocks.
Providing directional control.
What are the three basic positions are ?
Steering
Drive
Trailer
, Initially inflate tires to only __________________ to check for leaks and bead
sealing?
20 pso (138kpa)
Initially inflate tires to only __________________ to check for leaks and bead
sealing?
100 psi (689 kpa)
To help avoid accidents, when inflating tires, always use a ___________ and a
remote clip-on style air hose with an accurate pressure regulator?
Safety cage
Regulations state that radial tires and bias-ply tires should never be used on
the same axle because of the tires' different handling characteristics.
True or False
True
Ideally the tires on the same axle should be of the same make and tread
pattern
Why should the same type of tires be on the same axle ?
even the handling characteristics between makes vary and using different
makes on the same axle can cause instability under certain road conditions.
the tenancy of a tire to resist rolling along naturally when under load
Commercial Vehicles
Systems(52 questions and
answers)
have two or more layers of casing plies and cord loops running radially from
bead to bead.
Radial-ply tire
As such, radial tires separate the mechanical action of the tread and
sidewalls—which results in a better contact patch formed between the tire
and road. Consequently, radial tires have better fuel economy.
portion of a tire that touches the road surface
Contact Patch
What are the tires fours functions ?
Supporting the vehicle load
Transmitting braking & traction forces to the road surface.
Absorbing road shocks.
Providing directional control.
What are the three basic positions are ?
Steering
Drive
Trailer
, Initially inflate tires to only __________________ to check for leaks and bead
sealing?
20 pso (138kpa)
Initially inflate tires to only __________________ to check for leaks and bead
sealing?
100 psi (689 kpa)
To help avoid accidents, when inflating tires, always use a ___________ and a
remote clip-on style air hose with an accurate pressure regulator?
Safety cage
Regulations state that radial tires and bias-ply tires should never be used on
the same axle because of the tires' different handling characteristics.
True or False
True
Ideally the tires on the same axle should be of the same make and tread
pattern
Why should the same type of tires be on the same axle ?
even the handling characteristics between makes vary and using different
makes on the same axle can cause instability under certain road conditions.
the tenancy of a tire to resist rolling along naturally when under load
