2018 Alfa Romeo Stelvio tire pressure

TIRES
Tire Safety Information
Tire safety information will cover aspects
of the following information: Tire
Markings, Tire Identification Numbers,
Tire Terminology and Definitions, Tire
Pressures, and Tire Loading.
Tire MarkingsNote:
P (Passenger) — Metric tire sizing is
based on U.S. design standards.
P-Metric tires have the letter “P” molded
into the sidewall preceding the size
designation. Example: P215/
65R15 95H.
European — Metric tire sizing is
based on European design standards.
Tires designed to this standard have the
tire size molded into the sidewall
beginning with the section width. The
letter "P" is absent from this tire size
designation. Example: 215/65R15 96H.
LT (Light Truck) — Metric tire sizing is
based on U.S. design standards. The size
designation for LT-Metric tires is the
same as for P-Metric tires except for the
letters “LT” that are molded into the
sidewall preceding the size designation.
Example: LT235/85R16.
Temporary spare tires are designed
for temporary emergency use only.
Temporary high pressure compact spare
tires have the letter “T” or “S” molded
into the sidewall preceding the size
designation. Example: T145/
80D18 103M.
High flotation tire sizing is based on
U.S. design standards and it begins with
the tire diameter molded into the
sidewall. Example: 31x10.5 R15 LT.
0601085395USTire Markings
1 — U.S. DOT
Safety Standards
Code (TIN) 4 — Maximum
Load
2 — Size
Designation 5 — Maximum
Pressure
3 — Service
Description 6 — Treadwear,
Traction and
Temperature
Grades
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SERVICING AND MAINTENANCE

Tire Sizing Chart
EXAMPLE:
Example Size Designation: P215/65R15XL 95H, 215/65R15 96H, LT235/85R16C, T145/80D18 103M, 31x10.5 R15 LT
P =

Passenger car tire size based on U.S. design standards, or
"....blank...." = Passenger car tire based on European design standards, or
LT = Light truck tire based on U.S. design standards, or
TorS = Temporary spare tire or
31 = Overall diameter in inches (in)
215, 235, 145 = Section width in millimeters (mm)
65, 85, 80 = Aspect ratio in percent (%)
Ratio of section height to section width of tire, or
10.5= Section width in inches (in)
R = Construction code
"R" means radial construction, or
"D" means diagonal or bias construction
15, 16, 18 = Rim diameter in inches (in)
Service Description:
95 = Load Index
A numerical code associated with the maximum load a tire can carry
H= Speed Symbol
A symbol indicating the range of speeds at which a tire can carry a load corresponding to its load index under certain operating conditions
The maximum speed corresponding to the speed symbol should only be achieved under specified operating conditions (i.e., tire pressure, vehicle
loading, road conditions, and posted speed limits)
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EXAMPLE:
Load Identification:
Absence
of the following load identification symbols on the sidewall of the tire indicates a Standard Load (SL) tire:
XL= Extra load (or reinforced) tire, or
LL= Light load tire or
C, D, E, F, G = Load range associated with the maximum load a tire can carry at a specified pressure
Maximum Load – Maximum load indicates the maximum load this tire is designed to carry
Maximum Pressure – Maximum pressure indicates the maximum permissible cold tire inflation pressure for this tire
Tire Identification Number (TIN)
The TIN may be found on one or both
sides of the tire; however, the date code
may only be on one side. Tires with white sidewalls will have the full TIN, including
the date code, located on the white
sidewall side of the tire. Look for the TIN
on the outboard side of black sidewall
tires as mounted on the vehicle. If the TINis not found on the outboard side, then
you will find it on the inboard side of the
tire.
EXAMPLE:
DOT MA L9 ABCD 0301
DO
T= Department of Transportation
This symbol certifies that the tire is in compliance with the U.S. Department of Transportation tire safety standards and is approved for highway
use
MA = Code representing the tire manufacturing location (two digits)
L9 = Code representing the tire size (two digits)
ABCD = Code used by the tire manufacturer (one to four digits)
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SERVICING AND MAINTENANCE

EXAMPLE:
03 =
Number representing the week in which the tire was manufactured (two digits)
03 means the 3rd week
01= Number representing the year in which the tire was manufactured (two digits)
01 means the year 2001
Prior to July 2000, tire manufacturers were only required to have one number to represent the year in which the tire was manufactured. Example:
031 could represent the 3rd week of 1981 or 1991
Tire Terminology And Definitions
Term Definition
B-Pillar The
vehicle B-Pillar is the structural member of the body located behind the front door.
Cold Tire Inflation Pressure Cold tire inflation pressure is defined as the tire pressure after the vehicle has not
been driven for at least three hours, or driven less than 1 mile (1.6 km) after sitting for
a minimum of three hours. Inflation pressure is measured in units of PSI (pounds per
square inch) or kPa (kilopascals).
Maximum Inflation Pressure The maximum inflation pressure is the maximum permissible cold tire inflation
pressure for this tire. The maximum inflation pressure is molded into the sidewall.
Recommended Cold Tire Inflation Pressure Vehicle manufacturer's recommended cold tire inflation pressure as shown on the tire
placard.
Tire Placard A label permanently attached to the vehicle describing the vehicle’s loading capacity,
the original equipment tire sizes and the recommended cold tire inflation pressures.
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Tire Loading And Tire Pressure
Note:The proper cold tire inflation
pressure is listed on the driver’s side
B-Pillar or the rear edge of the driver's
side door.
Check the inflation pressure of each tire,
including the spare tire (if equipped), at
least monthly and inflate to the
recommended pressure for your vehicle. Tire And Loading Information Placard
This placard tells you important
information about the:
1. Number of people that can be carried
in the vehicle.
2. Total weight your vehicle can carry.
3. Tire size designed for your vehicle.
4. Cold tire inflation pressures for the
front, rear, and spare tires.
Loading
The vehicle maximum load on the tire
must not exceed the load carrying
capacity of the tire on your vehicle. You
will not exceed the tire's load carrying
capacity if you adhere to the loading
conditions, tire size, and cold tire
inflation pressures specified on the Tire
and Loading Information placard in
“Vehicle Loading” in the “Starting And
Operating” section of this manual.Note:
Under a maximum loaded vehicle
condition, gross axle weight ratings
(GAWRs) for the front and rear axles
must not be exceeded. For further
information on GAWRs, vehicle loading,
and trailer towing, refer to “Vehicle
Loading” in the “Starting And Operating”
section of this manual.
To determine the maximum loading
conditions of your vehicle, locate the
statement “The combined weight of
occupants and cargo should never
exceed XXX kg or XXX lbs” on the Tire
and Loading Information placard. The
combined weight of occupants,
cargo/luggage and trailer tongue weight
(if applicable) should never exceed the
weight referenced here.
Steps For Determining Correct Load
Limit—
(1) Locate the statement “The
combined weight of occupants and
cargo should never exceed XXX kg or
XXX lbs.” on your vehicle's placard.
(2) Determine the combined weight
of the driver and passengers that will
be riding in your vehicle.
(3) Subtract the combined weight of
the driver and passengers from XXX
kg or XXX lbs.0806115150USExample Tire Placard Location (Door)
0806115151USExample Tire Placard Location (B-Pillar)
GUID-054900418-high.tifTire And Loading Information Placard
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SERVICING AND MAINTENANCE

Tires — General Information
Tire Pressure
Proper tire inflation pressure is essential
to the safe and satisfactory operation of
your vehicle. Four primary areas are
affected by improper tire pressure:
Safety and Vehicle Stability
Economy
Tread Wear
Ride Comfort
Safety
Warning!
Improperly inflated tires are dangerous
and can cause collisions.
Underinflation increases tire flexing and
can result in overheating and tire failure.
Overinflation reduces a tire's ability to
cushion shock. Objects on the road and
chuckholes can cause damage that result in
tire failure.
Overinflated or underinflated tires can
affect vehicle handling and can fail
suddenly, resulting in loss of vehicle control.
Unequal tire pressures can cause steering
problems. You could lose control of your
vehicle.
Unequal tire pressures from one side of
the vehicle to the other can cause the
vehicle to drift to the right or left.
Always drive with each tire inflated to the
recommended cold tire inflation pressure.
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.
Note:
Unequal tire pressures from side to
side may cause erratic and
unpredictable steering response.
Unequal tire pressure from side to
side may cause the vehicle to drift left or
right.
Fuel Economy
Underinflated tires will increase tire
rolling resistance resulting in higher fuel
consumption.
Tread Wear
Improper cold tire inflation pressures can
cause abnormal wear patterns and
reduced tread life, resulting in the need
for earlier tire replacement.
Ride Comfort And Vehicle Stability
Proper tire inflation contributes to a
comfortable ride. Over-inflation
produces a jarring and uncomfortable
ride.
Tire Inflation Pressures
The proper cold tire inflation pressure is
listed on the driver's side B-Pillar or rear
edge of the driver's side door.
At least once a month:
Check and adjust tire pressure with a
good quality pocket-type pressure gauge.
Do not make a visual judgement when
determining proper inflation. Tires may
look properly inflated even when they are
under-inflated.
Inspect tires for signs of tire wear or
visible damage.
Caution!
After inspecting or adjusting the tire
pressure, always reinstall the valve stem
cap. This will prevent moisture and dirt from
entering the valve stem, which could
damage the valve stem.
Inflation pressures specified on the
placard are always “cold tire inflation
pressure”. Cold tire inflation pressure is
defined as the tire pressure after the
vehicle has not been driven for at least
three hours, or driven less than 1 mile
(1.6 km) after sitting for a minimum of
three hours. The cold tire inflation
pressure must not exceed the maximum
inflation pressure molded into the tire
sidewall.
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Check tire pressures more often if
subject to a wide range of outdoor
temperatures, as tire pressures vary with
temperature changes.
Tire pressures change by approximately
1 psi (7 kPa) per 12°F (7°C) of air
temperature change. Keep this in mind
when checking tire pressure inside a
garage, especially in the Winter.
Example: If garage temperature = 68°F
(20°C) and the outside temperature =
32°F (0°C) then the cold tire inflation
pressure should be increased by 3 psi
(21 kPa), which equals 1 psi (7 kPa) for
every 12°F (7°C) for this outside
temperature condition.
Tire pressure may increase from 2 to
6 psi (13 to 40 kPa) during operation. DO
NOT reduce this normal pressure build up
or your tire pressure will be too low.
Tire Pressures For High Speed
Operation
The manufacturer advocates driving at
safe speeds and within posted speed
limits. Where speed limits or conditionsare such that the vehicle can be driven at
high speeds, maintaining correct tire
inflation pressure is very important.
Increased tire pressure and reduced
vehicle loading may be required for
high-speed vehicle operation. Refer to
your authorized tire dealer or original
equipment vehicle dealer for
recommended safe operating speeds,
loading and cold tire inflation pressures.
Warning!
High speed driving with your vehicle under
maximum load is dangerous. The added
strain on your tires could cause them to fail.
You could have a serious collision. Do not
drive a vehicle loaded to the maximum
capacity at continuous speeds above
75 mph (120 km/h).
Recommended Cold Tire Inflation
Pressures
For vehicle speeds below 100 mph
(160 km/h), recommended cold tire
inflation pressures are listed on the TireAnd Loading Information Placard located
on driver’s side B-Pillar or the rear edge
of the driver's side door.
When driving at speeds 100 mph
(160 km/h) and above, increased tire
pressures and reduced vehicle loading
are required for high-speed vehicle
operation.
For driving speeds above 100 mph
(160 km/h) recommended cold tire
inflation pressures are listed below
under "High Speed Tire Inflation
Pressure". Vehicle loading condition must
not exceed 688 lbs. (312 kg) (driver +
three passengers + 88 lbs. (40kg)
luggage).
Warning!
High speed driving with your vehicle under
maximum load is dangerous. The added
strain on your tires could cause them to fail.
You could have a serious collision.
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SERVICING AND MAINTENANCE

TiresWheel Recommended Cold
Tire InflationPressure High Speed Tire
Inflation Pressure
Front Rear Front Rear
Original Equipment 255/45R20
101Y
20x9J 33 psi/
227kpa–39 psi/
269kpa–
285/40R20 104Y 20x10J –36 psi/
248kpa–42 psi/
290kpa
Snow Tires 255/45R20 M+S
20x9J33 psi/
227kpa–39 psi/
269kpa–
285/40R20 M+S 20x10J–36 psi/
248kpa–42 psi/
290kpa
Radial Ply Tires
Warning!
Combining radial ply tires with other types
of tires on your vehicle will cause your
vehicle to handle poorly. The instability could
cause a collision. Always use radial ply tires
in sets of four. Never combine them with
other types of tires.
Tire Repair
If your tire becomes damaged, it may be
repaired if it meets the following criteria:
The tire has not been driven on when
flat.
The damage is only on the tread
section of your tire (sidewall damage is
not repairable).
The puncture is no greater than a ¼ of
an inch (6 mm).
Consult an authorized tire dealer for tire
repairs and additional information.
Damaged Run Flat tires, or Run Flat tires
that have experienced a loss of pressure
should be replaced immediately with
another Run Flat tire of identical size and
service description (Load Index and
Speed Symbol).
Run Flat Tires — If Equipped
Run Flat tires allow you the capability to
drive 50 miles (80 km) at 50 mph
(80 km/h) after a rapid loss of inflation
pressure. This rapid loss of inflation is referred to as the Run Flat mode. A Run
Flat mode occurs when the tire inflation
pressure is of/or below 14 psi (96 kPa).
Once a Run Flat tire reaches the run flat
mode it has limited driving capabilities
and needs to be replaced immediately. A
Run Flat tire is not repairable.
It is not recommended driving a vehicle
loaded at full capacity or to tow a trailer
while a tire is in the run flat mode.
See the tire pressure monitoring section
for more information.
Tire Spinning
When stuck in mud, sand, snow, or ice
conditions, do not spin your vehicle's
wheels above 30 mph (48 km/h) or for
longer than 30 seconds continuously
without stopping.
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