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Tire Pressures
Tire Information
Tire Information Tire Pressures
Tires of the correct type, manufacture and The tire pressures recommended provide
dimensions, with correct cold inflation optimum ride and handling
pressures are an integral part of every characteristics for all normal operating
vehicle s design. Regular maintenance of conditions. The pressures should be
tires contributes not only to safety, but to checked and correctly set each week,
the designed function of the vehicle. with the tires cold.
Road-holding, steering and braking are
Tire temperatures and pressures increase
especially vulnerable to incorrectly
when running. Deflating a warm tire to the
pressurised, badly fitted or worn tires.
recommended pressure will result in
Tires of the correct size and type, but of under-inflation which may be dangerous.
different makes, have widely varying
characteristics. It is therefore
!
WARNING:
recommended that only Jaguar approved
" Under-inflation causes excessive
tires are fitted to all wheels.
flexing and uneven wear to the tire.
This can lead to sudden failure.
!
WARNING:
Over-inflation causes a harsh ride,
" Always ensure replacement tires uneven tire wear and poor handling.
have the correct rating and
" Pressure checks should only be
specifications (e.g. load index, size,
carried out when the tires are cold
speed rating) for your vehicle.
(the vehicle has been stationary for
Contact your Jaguar Retailer for
three hours or more).
more information.
Tire pressure label
" When using tires other than those
(Canada and Mexico only)
recommended by Jaguar, do not
A tire recommendation label is visible on
exceed the speed capacity
the end of the dashboard on the driver s
recommended by the
side of the vehicle, giving information
manufacturer.
specific to the vehicle s wheel and tire
Tire glossary
equipment.
Refer to page 189 for a glossary of terms
and definitions associated with tire
pressures and vehicle weights.
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Tire Pressures
Tire pressure label/placard (USA only)
A tire information label is visible on the " The vehicle capacity weight (4), which
pillar behind the driver s door (also known includes the weight of the driver,
as the B pillar), giving information passengers and cargo.
specific to the wheel and tire equipment
" Cold inflation pressures for the spare
fitted to the vehicle when it was built. The
tire (5) and the front and rear tires (6).
label contains the following information:
" The size of the tires (7) with which the
" The maximum number of occupants
vehicle was originally equipped.
(1), divided between the front (2) and
Note: The label must not be changed,
rear (3) of the vehicle.
even if different wheels are fitted at a
later stage.
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Tire Pressures
Recommended Tire Pressures
The following table gives the tire
pressures for all recommended tire sizes.
Tire Size Tire Pressure
Front Rear
205/55 R16 38 psi, 260 kPa 35 psi, 240 kPa
225/45 R17 38 psi, 260 kPa 35 psi, 240 kPa
225/40 R18 40 psi, 280 kPa 35 psi, 240 kPa
Space-saver spare wheel (front or rear) 60 psi, 420 kPa
Checking tire pressures A slight natural pressure loss occurs with
time. If this exceeds 2 psi (14 kPa) per
The following procedure should be used
week, the cause should be investigated
to check and adjust the tire pressures:
and rectified.
1. Remove the valve cover.
Note: It is an offence in certain countries
2. Firmly attach a tire pressure
to drive a vehicle with tires that are not
gauge/inflator to the valve.
inflated in accordance with the vehicle s
3. Read the tire pressure from the
proper use.
gauge. If required, add air to the tire.
4. If air is added to the tire, remove the
gauge from the valve and reattach it
before checking that the pressure is
correct. Failure to remove and
reattach the gauge from the valve
could cause the gauge to show an
incorrect reading.
5. If too much air is added, remove the
gauge from the valve and allow air out
of the tire by pressing the centre of the
valve. Reconnect the gauge to the
valve, and check that the air pressure
is correct.
6. Refit the valve cover.
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Tire Pressures
It is recommended that only Jaguar
R Performance Wheels
approved winter tires are used,
as follows:
Pirelli 205/55R 16
or
Continental 205/55R 16
Pirelli 225/45R 17
Tire directional indicators must be
rotating in a clockwise direction when
viewed from the right-hand side of the
vehicle, and anti-clockwise when viewed
from the left-hand side of the vehicle.
Do not exceed 130 mph (210 km/h) when
Some wheels have a slotted valve cover
using Jaguar approved winter tires.
on the wheel face. A pouch containing a
special tool and a valve adaptor, for use
Winter tires must be used in vehicle sets,
with these wheels, is stowed in the glove
that is, fitted on all four wheels.
compartment.
The recommended tire pressures for
To access the valve, unscrew the slotted
winter tires are the same as shown on
valve cover using the special tool (1).
page 180.
Screw in the adaptor (2) and
If non-Jaguar approved winter tires are
hand-tighten.
fitted, refer to the tire pressure
After checking the pressure, remove the
information label, attached to the end of
adaptor and refit the valve cover.
the dashboard on the driver s side of the
The special tool will grip the valve cover,
vehicle (Canada and Mexico) or the pillar
making it easier to refit.
behind the driver s door (USA).
Winter (Snow) Tires
The tires fitted as original equipment are
designed with a rubber compound, tread
pattern and width specially suited for high
speeds in normal road conditions,
but they are less suitable during extremes
of low temperatures, snow and ice.
The use of winter tires will considerably
improve the vehicle s handling during
these conditions.
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Tires
Tires
Tire Markings
P (1) Aspect ratio (3)
The P indicates the tire is for passenger This two-digit number, known as the
vehicles. aspect ratio, gives the tire's ratio of height
to width (this is also known as the tire
Tire width (2)
profile). The lower the number, the shorter
This three-digit number gives the width in
the tire s sidewall.
millimetres of the tire from sidewall edge
to sidewall edge. In general, the larger the
number, the wider the tire.
182
R
Tires
R (4)
The R stands for radial. Radial ply
Letter Rating Speed Rating
construction of tires has been the industry
Q 99 mph
standard for the past 20 years.
R106 mph
S112 mph
Wheel diameter (5)
T118 mph
This two-digit number is the wheel or rim
U124 mph
diameter in inches. If you change your
wheel size, you will have to purchase new H130 mph
tires to match the new wheel diameter.
V149 mph
W168 mph
Load index (6)
Y 186 mph*
This two- or three-digit number is the
* For tires with a maximum speed
tire's load index. It is a measurement of
capability over 149 mph, tire
how much weight each tire can support.
manufacturers sometimes use the
Note: You may not find this information
letters ZR. For those with a maximum
on all tires because it is not required by
speed capability over 186 mph, tire
law.
manufacturers always use the letters
ZR.
Speed rating (7)
The speed rating denotes the speed at
which a tire is designed to be driven for
U.S DOT tire identification number (8)
extended periods of time. The ratings
range from 99 miles per hour (mph) to 186 This begins with the letters DOT and
mph. These ratings are listed in the indicates that the tire meets all Federal
following table. standards. The next two numbers or
letters are the plant code where it was
Note: You may not find this information
manufactured, and the last four numbers
on all tires because it is not required by
represent the week and year the tire was
law.
built. For example, the numbers 3197
means the 31st week of 1997. The other
numbers are marketing codes used at the
manufacturer's discretion. This
information can be used to contact
consumers if a tire defect requires a
recall.
M+S (9)
The M+S or M/S indicates that the tire
has some mud and snow capability. Most
radial tires have these markings: they
have some mud and snow capability.
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Tires
Tire ply composition and materials Temperature letter (14)
used (10)
This letter indicates a tire's resistance to
The number of plies indicates the number heat. The temperature grade is for a tire
of layers of rubber-coated fabric in the that is inflated properly and not
tire. In general, the greater the number of overloaded. Excessive speed,
plies, the more weight a tire can support. under-inflation or excessive loading,
Tire manufacturers also must indicate the either separately or in combination, can
materials in the tire, which include steel, cause heat build-up and possible tire
nylon, polyester, and others. failure. From highest to lowest, a tire's
resistance to heat is graded as A, B, or C.
Treadwear number (11)
For more information, refer to page 187.
This number indicates the tire's wear rate.
Maximum permissible inflation
The higher the treadwear number is, the
pressure (15)
longer it should take for the tread to wear
down. For example, a tire graded 400 This number is the greatest amount of air
should last twice as long as a tire graded pressure that should ever be put in the tire
200. under normal driving conditions.
For more information, refer to page 187.
Traction letter (12)
This letter indicates a tire's ability to stop
on wet pavement. A higher graded tire
should allow you to stop your car on wet
roads in a shorter distance than a tire with
a lower grade. Traction is graded from
highest to lowest as AA, A, B, and C. For
more information, refer to page 187.
Maximum load rating (13)
This number indicates the maximum load
in kilograms and pounds that can be
carried by the tire.
184
R
Tires
Recommended Tire Fitment
The following chart details the tires recommended for use in Mexico.
Tire size Pattern
225/45 R 17 91Y Pirelli P Zero
225/45 R 17 94W Continental Conti Sport Contact
For all other countries refer to your local Retailer for specific tire fitment.
R Performance Wheels
The following tires are approved for use where R performance wheels are fitted.
Wheel size Tire size/manufacturer
7.5 x 18 225/40 ZR18 (92) Extra Load Pirelli P Zero Nero
Temporary-use Spare Wheel
(Where fitted)
!
WARNING:
Failure to comply with the following
can be dangerous. When a
temporary-use spare wheel is fitted,
switch off dynamic stability control,
drive with caution and replace with the
specified wheel and tire assembly as
soon as possible. Do not fit more than
one temporary-use spare wheel at one
time. Temporary-use spare wheel
maximum speed is 50 mph (80 km/h).
For information about temporary-use
spare wheel, refer to page 141.
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Tires
Incorrect wheel alignment will accelerate
Tire Care
tire wear. Fins on the inner or outer edges
In the interests of safety and reliability, it is
of the tread pattern are caused by
advisable to check the tires, including the
excessive toe-in or toe-out respectively.
spare, for condition and pressure on a
As fins may also be caused by high
weekly basis. Refer to page 180 for
cornering speeds or road camber, it is
instructions on how to check tire
advantageous to have the cause detected
pressures.
by having the wheel alignment checked.
Wear
Tire repair
It is recommended that damaged tires are
discarded and new tires fitted. They must
not be repaired in view of the high
performance capability of the vehicle.
Damage
Excessive local distortion can cause the
casing of a tire to fracture and may lead to
premature failure. Tires should be
examined especially for cracked walls,
exposed cords, etc. Flints and other
sharp objects must be removed from the
tire tread; if left in they may work through
All tires fitted as original equipment
the cover. Clean off any oil or grease
include tread wear indicators (TWI) in their
contamination by using a suitable cleaner.
tread pattern. When the tread has worn to
a remaining depth of 1.6 mm the
Caution: Do not use paraffin
indicators appear at the surface as bars
(kerosene), because this has a
which connect the tread pattern across
detrimental effect on rubber.
the full width of the tire.
Tire use after vehicle storage
It is illegal, in certain countries,
After a long period of a vehicle standing,
to continue to use tires after the tread has
tires may become locally distorted with a
worn to less than 1.6 mm over three
flat area. This will cause an uneven ride
quarters of the width and the entire
for a few miles until the tires have warmed
circumference of the tire.
up and the flat rounds off.
It should be noted that the properties of
However, to reduce the effects of
many tires alter progressively with wear.
flat-spots, the tires of a stored vehicle
In particular the wet grip and
may be inflated to pressures not
aquaplaning resistance are gradually but
exceeding 50 psi (343 kPa).
substantially reduced. Extra care and
speed restriction should therefore be
exercised on wet roads as the effective
tread depth diminishes.
186
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Tires
Tire Quality Grades
!
WARNING:
United States Department of
The traction grade assigned to this tire
Transportation/Uniform Tire Quality
is based on braking (straight ahead)
Grades
traction tests and does not include
The following information relates to the
cornering (turning) traction.
tire grading system developed by the
National Highway Traffic Safety
Temperature - A, B, C
Administration which will grade tires by
The temperature grades A (the highest),
tread wear, traction and temperature
B and C represent the tire s resistance
performance.
to the generation of heat and its ability to
dissipate heat when tested under
Tread wear
controlled conditions on a specified
The tread wear grade is a comparative
indoor laboratory test wheel.
rating based on the wear rate of the tire
Sustained high temperature can cause
when tested under controlled conditions
the material of the tire to degenerate and
on a specified government test course.
reduce tire life, and excessive
For example, a tire graded 150 would
temperature can lead to sudden tire
wear one and a half (1.5) times as well on
failure.
the government course as a tire
graded 100.
The grade C corresponds to a level of
performance which all passenger car tires
The relative performance of tires depends
must meet under the Federal Motor
upon the actual conditions of their use,
Vehicle Safety Standard No. 109.
however, and may depart significantly
from the norm due to variations in driving
Grades B and A represent higher levels
habits, service practices and differences
of performance on the laboratory test
in road characteristics and climate.
wheel than the minimum required by law.
Traction - A, B, C
!
The traction grades, from the highest to
WARNING:
the lowest are A , B and C , and they
The temperature grade for these tires
represent the tire s ability to stop on wet
is established for a tire that is properly
pavements as measured under controlled
inflated and not overloaded. Excessive
conditions on specified government test
speed, under-inflation or excessive
surfaces of asphalt and concrete. A tire
loading, either separately or in
marked C may have poor traction
combination, can cause heat build-up
performance.
and possible tire failure.
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Tires
Tire Renewal
When renewing tires, it is preferable to fit
a complete vehicle set. If either front or
rear tires only need to be renewed,
new tires must be fitted, as axle sets,
to replace worn ones.
After new tires have been fitted the
wheels need to be dynamically balanced.
The radial ply tires specified are designed
to meet the high-speed performance
capability of this vehicle.
Do not fit tires with a different tread
pattern, size or speed rating.
Snow Chains
Snow chains, of the recommended type,
may only be fitted to 16 inch front wheels.
Caution: Snow chains must not be
fitted to 17 inch wheels or above.
Contact your Jaguar Retailer for details
and availability of approved snow chains.
The maximum speed when using snow
chains is 30 mph (48 km/h).
Remove the snow chains immediately the
roads are clear of snow.
Ensure the fitting instructions supplied
with the snow chains are kept in a safe
place, for example, with this literature
pack.
Note: Dynamic Stability Control MUST
be switched OFF when using snow
chains.
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Tire Glossary
Tire Glossary
Maximum loaded vehicle weight:
Glossary
This is the sum of:
Cold tire pressure:
" Curb weight.
Pressure in a tire that has been driven for
" Accessory weight.
less than one mile or has been standing
for three hours or more.
" Vehicle capacity weight.
" Production options weight.
Maximum inflation pressure:
Maximum air pressure, to which a cold
Rim:
tire may be inflated, this figure (in psi and
A metal support for a tire or a tire and tube
kPa) is molded onto the sidewall of a tire.
assembly upon which the tire beads are
seated.
Curb weight:
The size of the wheel rims is stamped or
The weight of a motor vehicle with
cast on all wheels.
standard equipment including the
maximum capacity of fuel, oil, coolant
Bead:
and if so equipped, air conditioning and
The part of the tire that is made of steel
additional weight optional engine.
wires, wrapped or reinforced by ply cords
Accessory weight:
and that is shaped to fit the rim.
The combined weight (in excess of those
standard items which may be replaced) of
automatic transmission, power steering,
power brakes, power windows, power
seats, radio and heater, to the extent that
these items are available as
factory-installed equipment (whether
installed or not).
Production options weight:
The combined weight of those installed
production options weighing over 3 lb (1.4
kg) in excess of those standard items
which they replace, not previously
considered in curb weight or accessory
weight, including heavy duty brakes, ride
levellers, roof rack, heavy duty battery
and special trim.
Vehicle capacity weight:
The rated cargo and luggage load plus
150.0 lb (68.0 kg) times the vehicle s
designated seating capacity.
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Cargo Weights
Cargo Weights
Production Options Weights
!
(USA only) WARNING:
Do not exceed the vehicle capacity
This table lists the production options
weight (the total weight of driver,
weights. To calculate the curbweight of
passengers and cargo) given on the
your vehicle, add the weight of all
tire information label (see page 179).
production options, including optional
alloy wheels and spare wheel, to the basic
To calculate the cargo and luggage load
curbweight for your vehicle.
capacity of your vehicle, refer to page
192.
Note: The table only lists optional
equipment that weighs more than 3 lb
(1.4 kg).
Weight
lb kg
Curbweight, no options fitted
Sedan
2.5 and 3.0 litre, manual 3461 1570
2.5 and 3.0 litre, automatic 3554 1612
Wagon
2.5 and 3.0 litre, manual 3599 1632
2.5 and 3.0 litre, automatic 3692 1675
Production options
Sunroof 21.2 9.6
Xenon headlights 3.1 1.4
Headlight power wash 7.6 3.5
Electrically adjustable passenger seat - 8 way 12.1 5.5
Electrically adjustable front seats - 10 way 13.5 6.1
Premium audio system 15.0 6.8
CD autochanger 4.0 1.8
Navigation system 8.8 4.0
Rear spoiler (Wagon only) 6.2 2.8
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Cargo Weights
Weight
lb kg
Wheels and tires
16 steel wheels 15.4 7.0
Caicos wheels 0.0 0.0
Tobago wheels 17.6 8.0
Cayman wheels 20.1 9.1
Andros wheels 24.5 11.1
Aguila wheels 20.1 9.1
Aruba wheels 39.9 18.1
Melbourne wheels 52.7 23.9
Spare wheel and tire
16 spacesaver spare wheel 0.0 0.0
16 steel full-size spare wheel 13.2 6.0
Caicos spare wheel 9.3 4.2
Tobago spare wheel 13.7 6.2
Cayman spare wheel 14.3 6.5
Andros spare wheel 15.4 7.0
Aguila spare wheel 14.3 6.5
Aruba spare wheel 19.2 8.7
Melbourne spare wheel 22.5 10.2
Note: The weights listed under Wheels
and tires give the increase in weight over
a standard set of four wheels: the figure
only needs to be added to the curbweight
once. The Spare wheel and tire weight
must also be added, where applicable.
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Cargo Weights
Steps for determining correct load limit 6. If your vehicle will be towing a trailer,
load from your trailer will be
(USA only)
transferred to your vehicle. Consult
this handbook to determine how this
!
WARNING:
reduces the available cargo and
Do not exceed the vehicle capacity
luggage load capacity of your vehicle.
weight (the total weight of driver,
(Subtract the trailer nose load (see
passengers and cargo) given on the
page 195) from the available cargo
tire information label (see page 179).
and luggage load capacity.)
1. Locate the statement The combined
The number and weight of passengers will
weight of occupants and cargo
affect the cargo and luggage load
should never exceed XXXX kg or
capacity. In the example above, the cargo
XXXX lb on your vehicle s placard
and luggage load capacity is 650 lb.
(see page 179).
However, if fewer passengers ride in the
vehicle, the luggage load capacity will
2. Determine the combined weight of the
increase. If this vehicle carries three
driver and passengers that will be
150 lb passengers, the cargo and luggage
riding in your vehicle.
load capacity will increase to 950 lb:
3. Subtract the combined weight of the
(3 x 150 = 450 lb, and
driver and passengers from XXXX kg
1400 - 450 = 950 lb).
or XXXX lb (weight given on placard).
If the passengers weigh more, the cargo
4. The resulting figure equals the
and luggage load capacity will decrease.
available amount of cargo and
luggage load capacity. For example, if
!
the XXXX amount equals 1400 lb,
WARNING:
and there will be five 150 lb
" The weight of accessories must
passengers in your vehicle, the
also be subtracted from the
amount of available cargo and
available cargo and luggage load
luggage load capacity is 650 lb:
capacity. If you are unsure of the
(5 x 150 = 750, and
weight of any accessories fitted to
1400 - 750 = 650 lb).
your vehicle, contact your Jaguar
5. Determine the combined weight of Retailer.
luggage and cargo being loaded on
" Overloading the vehicle will have an
the vehicle. That weight may not
adverse affect on braking and
safely exceed the available cargo and
handling characteristics, which
luggage load capacity calculated in
could compromise your safety.
Step 4.
Overloading a vehicle may also
cause tire damage or failure.
Never overload your vehicle.
192
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