▫Radial-Ply Tires......................168
▫Spare Tire Usage With Directional Tread Pattern
Tires (300M Special Only)...............169
▫Compact Spare Tire....................169
▫Tire Spinning........................170
▫Tire Chains..........................170
▫Snow Tires..........................170
▫Tread Wear Indicators..................171
▫Replacement Tires.....................172
▫Tire Rotation Recommendations...........173
▫Tire Rotation With Directional Tread Pattern Tires
(300M Special Only)...................173
▫Alignment And Balance.................174
Fuel Requirements.....................175▫300M..............................175
▫300M Special Only....................175
▫Reformulated Gasoline.................175
▫Gasoline/Oxygenate Blends..............176
▫MMT In Gasoline.....................176
▫Materials Added To Fuel................177
▫Sulfur In Gasoline.....................177
Adding Fuel..........................177
▫Fuel Filler Cap (Gas Cap)...............177
Vehicle Loading.......................179
▫Luggage Racks.......................179
Trailer Towing........................179
▫Warranty Requirements.................179
154 STARTING AND OPERATING
2. Economy—
Improper inflation pressures can cause uneven wear
patterns to develop across the tire tread. These abnormal
wear patterns will reduce tread life resulting in a need for
earlier tire replacement. Under inflation also increases
tire rolling resistance and results in higher fuel consump-
tion.
3. Ride Comfort and Vehicle Stability—
Proper tire inflation contributes to a comfortable ride.
Over inflation produces a jarring and uncomfortable ride.
Both under-inflation and over inflation affect the stability
of the vehicle and can produce a feeling of sluggish
response or over-responsiveness in the steering.
Unequal tire pressures can cause erratic and unpredict-
able steering response.
Unequal tire pressure from side to side may cause the
vehicle to drift left or right.
Tire Inflation Pressures
The proper tire pressure for your vehicle is listed on a
label attached to the rear face of the driver’s door. The
pressure should be checked and adjusted at least once
every month. Check more often if subject to a wide range
of outdoor temperatures, as tire pressures vary with
temperature changes.
Inflation pressures specified on the label are always “Cold
Inflation Pressure”. Cold inflation pressure is defined as
the tire pressure after the vehicle has not been driven for at
least 3 hours, or driven less than a mile after a 3 hour
STARTING AND OPERATING 165
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