tire size FORD GT 2005 1.G Owners Manual

The traction grade assigned to this tire is based on
straight-ahead braking traction tests, and does not include
acceleration, cornering, hydroplaning or peak traction characteristics.
Temperature A B C
The temperature grades are A (the highest), B and C, representing the
tire ’s resistance to the generation of heat and its ability to dissipate heat
when tested under controlled conditions on a specified indoor laboratory
test wheel. Sustained high temperature can cause the material of the tire
to degenerate and reduce tire life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds to a level of performance
which all passenger car tires must meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades B and A represent higher levels of
performance on the laboratory test wheel than the minimum required by
law.
The temperature grade for this tire is established for a tire that
is properly inflated and not overloaded. Excessive speed,
underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.
TIRES
Tires are designed to give many thousands of miles of service, but they
must be maintained in order to get the maximum benefit from them.
Glossary of tire terminology
• Tire label: A label showing the OE (Original Equipment) tire sizes,
recommended inflation pressure and the maximum weight the vehicle
can carry.
• Tire Identification Number (TIN): A number on the sidewall of
each tire providing information about the tire brand and
manufacturing plant, tire size and date of manufacture.
• Inflation pressure: A measure of the amount of air in a tire.
• Standard load: A class of P-metric or Metric tires designed to carry a
maximum load at 35 psi [37 psi (2.5 bar) for Metric tires]. Increasing
the inflation pressure beyond this pressure will not increase the tire ’s
load carrying capability.
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TIRE REPLACEMENT REQUIREMENTS
Your vehicle is equipped with tires designed to provide a safe ride and
handling capability.
Only use replacement tires and wheels that are the same size
and type (such as P-metric versus LT-metric or all-season versus
all-terrain) as those originally provided by Ford. Use of any tire or
wheel not recommended by Ford can affect the safety and
performance of your vehicle, which could result in an increased risk of
loss of vehicle control, vehicle rollover, personal injury and death.
Additionally the use of non-recommended tires and wheels could cause
steering, suspension, axle or transfer case/power transfer unit failure. If
you have questions regarding tire replacement, see an authorized Ford
or Lincoln/Mercury dealer.
Make sure all tires and wheels on the vehicle are of the same size, type,
tread design, brand, load-carrying capacity and speed rating because it
can affect the safety and performance of your vehicle, which could result
in an increased risk of loss of vehicle control, vehicle rollover, personal
injury and death.
CHANGING A FLAT TIRE
If you get a flat tire while driving:
• do not brake heavily.
• gradually decrease the vehicle ’s speed.
• hold the steering wheel firmly.
• slowly move to a safe place on the side of the road.
Note: This vehicle is not equipped with a spare tire, but does include an
emergency tire inflation kit that can be used to repair one flat tire. Read
the entire Tire inflation kit section that follows before attempting to
repair a flat tire.
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Note:If you experience any unusual vibration, ride disturbance or noise
while driving, reduce your speed until you can safely pull off to the side
of the road to call for roadside assistance.
You can check the tire pressure any time within the 120 miles by
performing the following:
1. Ensure the compressor is turned off by pressing the “O ” side of the
orange button.
2. Remove the hose and the cable with the electrical plug from the kit ’s
storage compartment.
3. Remove the valve cap from the sealed tire, then screw the hose firmly
onto the tire ’s air valve.
4. Insert the electrical plug into the vehicle ’s power point.
5. Start the engine (only if the vehicle is outdoors or in a
well-ventilated area) to prevent the vehicle’s battery from draining.
6. Read the air pressure gauge on the inflation kit.
If the tire pressure needs to be increased, operate the air compressor
and inflate the tire to the recommended pressure as indicated on the
label on the B-Pillar.
WHEEL LUG NUT TORQUE SPECIFICATIONS
Retighten the lug nuts to the specified torque at 500 miles (800 km)
after any wheel disturbance (tire rotation, changing a flat tire, wheel
removal, etc.).
Bolt size Wheel lug nut torque* lb.ft. N•m
1⁄2x 20 100 135
* Torque specifications are for nut and bolt threads free of dirt and
rust. Use only Ford recommended replacement fasteners.
When a wheel is installed, always remove any corrosion, dirt or
foreign materials present on the mounting surfaces of the wheel
or the surface of the front disc brake hub and rotor that contacts the
wheel. Installing wheels without correct metal-to-metal contact at
the wheel mounting surfaces can cause the wheel nuts to loosen
and the wheel to come off while the vehicle is in motion, resulting in
loss of control.
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INFORMATION CONTAINED ON THE TIRE SIDEWALL
Federal law requires tire manufacturers to place standardized
information on the sidewall of all tires. This information identifies and
describes the fundamental characteristics of the tire and also provides a
U.S. DOT Tire Identification Number for safety standard certification and
in case of a recall.
Information on “P” type tires
P215/65R15 95H is an example of a
tire size, load index and speed
rating. The definitions of these
items are listed below. (Note that
the tire size, load index and speed
rating for your vehicle may be
different from this example.)
1.P: Indicates a tire, designated by
the Tire and Rim Association
(T&RA), that may be used for
service on cars, SUVs, minivans and
light trucks.
Note: If your tire size does not
begin with a letter this may mean it
is designated by either ETRTO
(European Tire and Rim Technical Organization) or JATMA (Japan Tire
Manufacturing Association).
2. 215: Indicates the nominal width of the tire in millimeters from
sidewall edge to sidewall edge. In general, the larger the number, the
wider the tire.
3. 65: Indicates the aspect ratio which gives the tire ’s ratio of height to
width.
4. R: Indicates a “radial ”type tire.
5. 15: Indicates the wheel or rim diameter in inches. If you change your
wheel size, you will have to purchase new tires to match the new wheel
diameter.
6. 95: Indicates the tire ’s load index. It is an index that relates to how
much weight a tire can carry. You may find this information in your
Owner ’s Guide. If not, contact a local tire dealer.
Note: You may not find this information on all tires because it is not
required by federal law.
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7.H: Indicates the tire ’s speed rating. The speed rating denotes the
speed at which a tire is designed to be driven for extended periods of
time under a standard condition of load and inflation pressure. The tires
on your vehicle may operate at different conditions for load and inflation
pressure. These speed ratings may need to be adjusted for the difference
in conditions. The ratings range from 81 mph (130 km/h) to 186 mph
(299 km/h). These ratings are listed in the following chart.
Note: You may not find this information on all tires because it is not
required by federal law.
Letter rating Speed rating - mph (km/h)
M 81 mph (130 km/h)N 87 mph (140 km/h)
Q 99 mph (159 km/h)R 106 mph (171 km/h) S 112 mph (180 km/h)
T 118 mph (190 km/h)
U 124 mph (200 km/h)
H 130 mph (210 km/h) V 149 mph (240 km/h)
W 168 mph (270 km/h) Y 186 mph (299 km/h)
Note: For tires with a maximum speed capability over 149 mph (240
km/h), tire manufacturers sometimes use the letters ZR. For those with
a maximum speed capability over 186 mph (299 km/h), tire
manufacturers always use the letters ZR.
8. U.S. DOT Tire Identification Number (TIN): This begins with the
letters “DOT ”and indicates that the tire meets all federal standards. The
next two numbers or letters are the plant code designating where it was
manufactured, the next two are the tire size code and the last four
numbers represent the week and year the tire was built. For example,
the numbers 317 mean the 31st week of 1997. After 2000 the numbers
go to four digits. For example, 2501 means the 25th week of 2001. The
numbers in between are identification codes used for traceability. This
information is used to contact customers if a tire defect requires a recall.
9. M+S or M/S: Mud and Snow, or
AT: All Terrain, or
AS: All Season.
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Information on“T ” type tires
“ T ” type tires have some additional
information beyond those of “P ”
type tires; these differences are
described below:
T145/80D16 is an example of a tire
size.
Note: The temporary tire size for
your vehicle may be different from
this example.
1. T: Indicates a type of tire,
designated by the Tire and Rim
Association (T&RA), that is
intended for temporary service on
cars, SUVs, minivans and light
trucks.
2. 145: Indicates the nominal width
of the tire in millimeters from
sidewall edge to sidewall edge. In general, the larger the number, the
wider the tire.
3. 80: Indicates the aspect ratio which gives the tire ’s ratio of height to
width. Numbers of 70 or lower indicate a short sidewall.
4. D: Indicates a “diagonal ”type tire.
R: Indicates a “radial ”type tire.
5. 16: Indicates the wheel or rim diameter in inches. If you change your
wheel size, you will have to purchase new tires to match the new wheel
diameter.
Location of the tire label
You will find a tire label containing tire inflation pressure by tire size and
other important information located on the B-Pillar or the edge of the
driver ’s door.
TIRE CARE
Improper or inadequate vehicle maintenance can also cause tires to wear
abnormally. Here are some of the important maintenance items:
Tire wear
Measure and inspect the tire tread on all your tires periodically.
Advanced and unusual tire wear can reduce the ability of tread to grip
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STEERING
To prevent damage to the power steering system:
•Never hold the steering wheel at its furthest turning points (until it
stops) for more than a few seconds when the engine is running.
• Do not operate the vehicle with a low power steering pump fluid level
(below the MIN mark on the reservoir). Refer to Checking and
adding power steering power fluid in theMaintenance and
Specifications chapter for information on checking and filling the
power steering fluid reservoir.
If the power steering system breaks down (or if the engine is turned
off), you can steer the vehicle manually, but it takes more effort.
If the steering wanders or pulls, check for:
• an improperly inflated tire
• uneven tire wear
• loose or worn suspension components
• loose or worn steering components
• improper steering alignment
A high crown in the road or high crosswinds may also make the steering
seem to wander/pull.
LIMITED-SLIP AXLE
This axle provides added traction on slippery surfaces, particularly when
one wheel is on a poor traction surface. Under normal conditions, the
limited slip axle functions like a standard rear axle.
Extended use of other than the manufacturer ’s specified size tires on a
limited slip rear axle could result in a permanent reduction in
effectiveness. This loss of effectiveness does not affect normal driving
and should not be noticeable to the driver.
PREPARING TO DRIVE YOUR VEHICLE
Your vehicle has special design features, such as a decreased ground
clearance; care should be taken when driving your vehicle near curbs,
speed bumps and parking lot bump-stops.
Use extra caution while becoming familiar with your vehicle. Know the
capabilities and limitations of both you as a driver and your vehicle.
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Do not use cleaning solvents, bleach or dye on the vehicle’s
safety belts, as these actions may weaken the belt webbing.
LEATHER SEATS
Your vehicle is equipped with seating covered in premium, top-grain
Frau leather which is extremely durable, but still requires special care
and maintenance in order to ensure longevity and comfort.
Regular cleaning and conditioning will maintain the appearance of the
leather. Failure to care for the leather can result in drying out and fading
of the material.
Cleaning
For dirt, use a vacuum cleaner then use a clean, damp cloth or soft
brush.
• Clean spills immediately.
• Soak a soft cloth with distilled water and neutral soap, then wring out
before use.
• Do not use household cleaning products, alcohol solutions, solvents or
cleaners intended for rubber, vinyl or plastics.
Allow the area to dry, then apply conditioner.
Scratches
In order to lessen the appearance of certain scratches and other wear
marks, apply conditioner on the affected area following the same
instructions as in the Conditioningsection.
Conditioning
Use only premium leather conditioner.
• Apply your first conditioning treatment within six months of taking
delivery of your vehicle. Condition twice yearly in order to replenish
lost oils and revitalize the aroma, suppleness and resilience of the
leather.
• Clean the surfaces using the steps outlined under Cleaningin this
section.
• Ensure the leather is dry then apply a nickel-sized amount of
conditioner to a clean, dry cloth
• Rub the conditioner into leather until it disappears. Allow the
conditioner to dry and repeat the process for the entire interior. If a
film appears, wipe off film with a dry, clean cloth.
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Keep a record for at least one month and record the type of driving (city
or highway). This will provide an accurate estimate of the vehicle’s fuel
economy under current driving conditions. Additionally, keeping records
during summer and winter will show how temperature impacts fuel
economy. In general, lower temperatures give lower fuel economy.
Driving style —good driving and fuel economy habits
Give consideration to the lists that follow and you may be able to change
a number of variables and improve your fuel economy.
Habits
• Smooth, moderate operation can yield up to 10% savings in fuel.
• Steady speeds without stopping will usually give the best fuel
economy.
• Idling for long periods of time (greater than one minute) may waste
fuel.
• Anticipate stopping; slowing down may eliminate the need to stop.
• Sudden or hard accelerations may reduce fuel economy.
• Slow down gradually.
• Driving at reasonable speeds (traveling at 55 mph [88 km/h] uses 15%
less fuel than traveling at 65 mph [105 km/h]).
• Revving the engine before turning it off may reduce fuel economy.
• Using the air conditioner or defroster may reduce fuel economy.
• Resting your foot on the brake pedal while driving may reduce fuel
economy.
• Combine errands and minimize stop-and-go driving.
Maintenance
• Keep tires properly inflated and use only recommended size.
• Operating a vehicle with the wheels out of alignment will reduce fuel
economy.
• Use recommended engine oil. Refer to Lubricant specificationsin
this chapter.
• Perform all regularly scheduled maintenance items. Follow the
recommended maintenance schedule and owner maintenance checks
found in the scheduled maintenance guide chapter.
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