Normal occupant weight
Means 150 lbs (68 kilograms) times the number of occupants seated
in the vehicle up to the total seating capacity of your vehicle.
Occupant distribution
The placement of passengers in a vehicle.
Outer diameter
The diameter of a new, properly inflated tire.
Overall width
Total width measured at the exterior sidewalls of an inflated tire, in-
cluding the additional width of labeling, decorations, or protective
bands or ribs.
Passenger car tire
A tire intended for use on passenger cars, multipurpose passenger
vehicles, and trucks, that have a gross vehicle weight rating (GVWR)
of 10,000 pounds or less.
Ply
A layer of rubber-coated parallel cords.
Ply separation
A parting of rubber compound between adjacent plies.
Pneumatic tire
A mechanical device made of rubber, chemicals, fabric, and steel or
other materials, that, when mounted on an automotive wheel, pro-
vides the traction and contains the gas or fluid that sustains the load.
Production options weight
The combined weight of installed regular production options weighing
over 5 lbs (2.3 kg) more than the standard items they replace, and not
previously considered as curb weight or accessory weight. These
include, for example, heavy-duty brakes, ride levelers, roof rack,
heavy-duty battery, and special trim.
Radial ply tires
A pneumatic tire in which the ply cords that extend to the beads are
laid at substantially 90 degrees to the centerline of the tread.
Description Possible causes,
among others Possible remedy
Electrical con-
sumers do not
work.
Vehicle battery
charge too low. Charge vehicle battery
Remaining fuel level
too low. Refuel
Fuse blown. Check fuse and replace if
necessary
Fuel consumption
higher than indi-
cated.
– Short hauls.
– “Jumpy” accelera-
tor pedal.
– Avoid short distance
driving.
– Drive defensively.
– Accelerate smoothly.
Electrical loads
switched on.
Switch off unnecessary
loads.
Engine control
malfunction.
Have the malfunction cor-
rected
Tire pressure too
low. Adjust tire pressure
Driving in the
mountains.
No direct corrective action
possible.
Towing a trailer or
driving with a roof
rack.
– Check use.
– Remove if not in use.
Driving with heavy
payload.
No direct corrective action
possible.
Driving at high en-
gine speed. Select a higher gear.
