Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 2110
It is recommended that tires equivalent to the original equipment tires be used when replacement is needed.
Failure to use equivalent replacement tires may adversely affect the safety and handling of the vehicle.
The original equipment tires provide a proper combination of many characteristics such as:
•
Ride
•
Noise
•
Handling
•
Durability
•
Tread life
•
Traction
•
Rolling resistance
•
Speed capability
The use of tires smaller than the minimum tire size approved for the vehicle can result in tire overloading and fail-
ure.
Use tires that have the approved load rating for the vehicle and never overload them. Failure to equip the vehicle
with tires having adequate speed capability can result in sudden tire failure and loss of vehicle control.
The use of oversize tires may cause interference with vehicle components. Under extremes of suspension and
steering travel, interference with vehicle components may cause tire damage.
SPARE TIRE
A compact (temporary) spare tire and wheel assembly is standard equipment on most models of this vehicle. A
full-size spare is not available on most models.
A spare tire is not available on the SRT8. The SRT8 is equipped with the TIREFIT tire repair kit to be used to repair
small punctures in the tire as necessary. For additional information, refer to the Owners Manual.
A full-size spare is used on fleet vehicles equipped with the Police Package. This tire and wheel assembly is iden-
tical to the heavy duty steel wheels and tires mounted on the vehicle. It mounts to a special full-size spare mounting
bracket located in the luggage compartment.
The spare tire and wheel diameters and wheel offsets match those of the road wheels on the vehicle.
The compact (temporary) spare tire is designed for emergency use only. The original tire should be repaired or
replaced at the first opportunity, then reinstalled. Do not exceed speeds of 80 km/h (50 mph) when using the com-
pact (temporary) spare tire and wheel assembly. Refer to the Owner’s Manual for complete details.
DIAGNOSIS AND TESTING
TIRE NOISE
Unusual tire noise can be associated with tire and wheel vibration or irregular tire wear. For vibration issues, (Refer
to 22 - TIRES/WHEELS - DIAGNOSIS AND TESTING). For irregular tire wear issues, (Refer to 22 - TIRES/
WHEELS/TIRES - DIAGNOSIS AND TESTING).
TIRE/VEHICLE LEAD
(Refer to 2 - SUSPENSION/WHEEL ALIGNMENT - DIAGNOSIS AND TESTING)
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TIRES/WHEELS
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TIRE WEAR PATTERNS
Under inflation will cause wear on the shoulders of tire. Over inflation will cause wear at the center of tire.
Excessive camber causes the tire to run at an angle to the road. One side of tread is then worn more than the
other.
Excessive toe-in or toe-out causes wear on the tread edges and a feathered effect across the tread.
TREAD WEAR INDICATORS
Tread wear indicators are molded into the bottom of
the tread grooves. When tread depth is 1.6 mm (1/16
in.), the tread wear indicators will appear as a 13 mm
(1/2 in.) band (3).
Tire replacement is necessary when indicators appear
in two or more grooves or if localized balding occurs.
STANDARD PROCEDURE
TIRE INFLATION PRESSURES
The specified tire pressures have been chosen to provide safe operation, vehicle stability, and a smooth ride. The
proper tire pressure specification can be found on the Tire And Loading Information Label provided with the vehicle
(usually on the driver’s door opening or B-pillar).
A quality air pressure gauge is recommended to check tire air pressure. Tire pressure should be checked cold once
per month. Check tire pressure more frequently when the weather temperature varies widely. Tire pressure will
decrease when the outdoor temperature drops. After checking the air pressure, replace valve cap finger tight.
Inflation pressures specified on the Tire Inflation Pressure Label are always the cold inflation pressure of the tire.
Cold inflation pressure is obtained after the vehicle has not been operated for at least 3 hours, or the vehicle is
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TIRES/WHEELS
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driven less than one mile after being inoperative for 3 hours. Tire inflation pressures may increase from 2 to 6
pounds per square inch (psi) during operation. Do not reduce this normal pressure buildup.
Improper inflation can cause:
•
Uneven wear patterns
•
Reduced tread life
•
Reduced fuel economy
•
Unsatisfactory ride
•
The vehicle to drift.
WARNING: Over or under inflated tires can affect vehicle handling. The tire can fail suddenly, resulting in
loss of vehicle control.
Under inflation causes rapid shoulder wear, tire flex-
ing, and can result in tire failure (1).
Over inflation causes rapid center wear and loss of
the tire’s ability to cushion shocks (1).
TIRE PRESSURE FOR HIGH SPEED OPERATION
Refer to the vehicle’s Owners Manual Package.
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TIRES/WHEELS
LX
TIRE LEAK REPAIRING
For proper repairing, a radial tire must be removed
from the wheel. Repairs should only be made if the
defect, or puncture, is in the tread area (1). The tire
should be replaced if the puncture is located in the
sidewall.
Deflate tire completely before attempting to dismount
the tire from the wheel. Use a lubricant such as a
mild soap solution when dismounting or mounting
tire. Use tools free of burrs or sharp edges which
could damage the tire or wheel rim.
Before mounting tire on wheel, make sure all rust is
removed from the rim bead and repaint if necessary.
Install wheel on vehicle, and progressively tighten the
5 wheel nuts to a torque of 150 N·m (110 ft. lbs.).
CLEANING
TIRE CLEANING
Before delivery of a vehicle, remove the protective coating on the tires with white sidewalls or raised white letters.
To remove the protective coating, apply warm water and let it soak for a few minutes. Afterwards, scrub the coating
away with a soft bristle brush. Steam cleaning may also be used to remove the coating.
CAUTION: DO NOT use gasoline, mineral oil, oil-based solvent or a wire brush for cleaning.
SPECIFICATIONS
TIRE - SRT8
THREE-SEASON TIRE
DESCRIPTION
SPECIFICATION
Manufacturer
Goodyear
Model
Eagle F1 Supercar
Size-Front
245/45ZR20
Size-Rear
255/45ZR20
ALL-SEASON TIRE
DESCRIPTION
SPECIFICATION
Manufacturer
Goodyear
Model
Eagle RS-A
Size
245/45ZR20
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TIRES/WHEELS
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