ESP ALFA ROMEO STELVIO 2023 Workshop Manual

225

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 US design standards, or
"....blank...." = Passenger car tire based on European design standards, or
LT = Light truck tire based on US design standards, or
T or S = 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)
23_GU_OM_EN_USC_t.book Page 225

SERVICING AND MAINTENANCE

230

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
Fuel Economy
Tread Wear
Ride Comfort and Vehicle Stability
Safety Both underinflation and overinflation 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. Overinflation 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 underinflated.
Inspect tires for signs of tire wear or visible
damage. 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.
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.
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.
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.
23_GU_OM_EN_USC_t.book Page 230

235

Since this tire has limited tread life, the original
equipment tire should be repaired (or replaced)
and reinstalled on your vehicle at the first
opportunity.
Do not install a wheel cover or attempt to mount
a conventional tire on the compact spare wheel,
since the wheel is designed specifically for the
compact spare tire. Do not install more than one
compact spare tire and wheel on the vehicle at
any given time.
Full Size Spare — If Equipped
The full size spare is for temporary emergency
use only. This tire may look like the originally
equipped tire on the front or rear axle of your
vehicle, but it is not. This spare tire may have
limited tread life. When the tread is worn to the
tread wear indicators, the temporary use full size
spare tire needs to be replaced. Since it is not the
same as your original equipment tire, replace (or
repair) the original equipment tire and reinstall on
the vehicle at the first opportunity.
Limited Use Spare — If Equipped
The limited use spare tire is for temporary
emergency use only. This tire is identified by a
label located on the limited use spare wheel.
This label contains the driving limitations for
this spare. This tire may look like the original
equipped tire on the front or rear axle of your
vehicle, but it is not. Installation of this limited use
spare tire affects vehicle handling. Since it is not
the same as your original equipment tire, replace
(or repair) the original equipment tire and
reinstall on the vehicle at the first opportunity.
WHEEL AND WHEEL TRIM CARE
All wheels and wheel trim, especially aluminum
and chrome plated wheels, should be cleaned
regularly using mild (neutral Ph) soap and water
to maintain their luster and to prevent corrosion.
Wash wheels with the same soap solution
recommended for the body of the vehicle and
remember to always wash when the surfaces are
not hot to the touch.Your wheels are susceptible to deterioration
caused by salt, sodium chloride, magnesium
chloride, calcium chloride, etc., and other road
chemicals used to melt ice or control dust on dirt
roads. Use a soft cloth or sponge and mild soap to
wipe away promptly. Do not use harsh chemicals
or a stiff brush. They can damage the wheel’s
protective coating that helps keep them from
corroding and tarnishing.
When cleaning extremely dirty wheels including
excessive brake dust, care must be taken in the
selection of tire and wheel cleaning chemicals
and equipment to prevent damage to the wheels.
Select a non-abrasive, non-acidic cleaner for
aluminum or chrome wheels.
WARNING!
Compact and collapsible spares are for
temporary emergency use only. With these
spares, do not drive more than 50 mph
(80 km/h). Temporary use spares have limited
tread life. When the tread is worn to the tread
wear indicators, the temporary use spare tire
needs to be replaced. Be sure to follow the
warnings, which apply to your spare. Failure to
do so could result in spare tire failure and loss
of vehicle control. WARNING!
Limited use spares are for emergency use
only. Installation of this limited use spare tire
affects vehicle handling. With this tire, do not
drive more than the speed listed on the limited
use spare wheel. Keep inflated to the cold tire
inflation pressures listed on your Tire and
Loading Information Placard located on the
driver’s side B-pillar or the rear edge of the
driver’s side door. Replace (or repair) the
original equipment tire at the first opportunity
and reinstall it on your vehicle. Failure to do so
could result in loss of vehicle control.
CAUTION!
Avoid products or automatic car washes that
use acidic solutions or strong alkaline
additives or harsh brushes. Many aftermarket
wheel cleaners and automatic car washes may
damage the wheel's protective finish. Such
damage is not covered by the New Vehicle
Limited Warranty. Only car wash soap is
recommended.
CAUTION!
Do not use scouring pads, steel wool, a bristle
brush, metal polishes or oven cleaner. These
products may damage the wheel's protective
finish. Such damage is not covered by the
New Vehicle Limited Warranty. Only car wash
soap is recommended.
23_GU_OM_EN_USC_t.book Page 235

237

TIRE ROTATION RECOMMENDATIONS
Tires on the front and rear axles of vehicles
operate at different loads and perform different
steering, driving, and braking functions. For these
reasons, they wear at unequal rates. These
effects can be reduced by timely rotation of tires.
Rotation will increase tread life, maintain traction
levels and contribute to a smooth, quiet ride.
To resolve this problem, tires should be rotated at
each service interval (approximately every
10,000 miles [16,000 km]). More frequent
rotation is permissible if desired. The reasons for
any rapid or unusual wear should be corrected
prior to rotation being performed.
Tire Rotations Not Recommended — If Equipped
Due to different size tires and wheels on front and
rear axles, tire rotation is not possible for:
2.0L Engine equipped with a different front and
rear tire size.
Tire rotation contributes to the preservation of the
grip and traction performance on wet, muddy or
snowy roads, guaranteeing optimal drivability of
the vehicle.
In the case of irregular wear of the tires identify
the cause and correct it as soon as possible, by
contacting an authorized dealer.The rotational direction of the tire must be taken
into consideration when rotating the tires. The
recommended rotation pattern for directional
tires is shown in the following diagram.
Tire Rotation
It is recommended to avoid situations with a large
difference in wear between the front and rear
tires and to strictly use Winter tires of the sizes
given on the tire placard.
The AWD system and the original tires are
developed together to ensure the vehicle’s best
performance. When changing the tires, it is
recommended to us the same “AR” marked tires,
to maintain the same level of performance and
component life.
CAUTION!
To avoid damage to your vehicle or tires,
observe the following precautions:
Because of restricted traction device
clearance between tires and other
suspension components, it is important that
only traction devices in good condition are
used. Broken devices can cause serious
damage. Stop the vehicle immediately if
noise occurs that could indicate device
breakage. Remove the damaged parts of
the device before further use.
Install device as tightly as possible and then
retighten after driving about ½ mile (0.8 km).
Do not exceed 30 mph (48 km/h).
Drive cautiously and avoid severe turns and
large bumps, especially with a loaded
vehicle.
Do not drive for a prolonged period on
dry pavement.
Observe the traction device manufacturer’s
instructions on the method of installation,
operating speed, and conditions for use.
Always use the suggested operating speed of
the device manufacturer’s if it is less than
30 mph (48 km/h).
Do not use traction devices on a compact
spare tire.
CAUTION!
Damage to the vehicle may occur if different
front and rear tire sizes are rotated
23_GU_OM_EN_USC_t.book Page 237

SERVICING AND MAINTENANCE

238

DEPARTMENT OF
TRANSPORTATION
UNIFORM TIRE QUALITY
GRADES
The following tire grading categories
were established by the National
Highway Traffic Safety Administration.
The specific grade rating assigned by
the tire's manufacturer in each
category is shown on the sidewall of
the tires on your vehicle.

All passenger vehicle tires must conform
to Federal safety requirements in
addition to these grades.

TREADWEAR
The Treadwear grade is a comparative
rating, based on the wear rate of the
tire when tested under controlled
conditions on a specified government
test course. For example, a tire graded
150 would wear one and one-half times
as well on the government course as a
tire graded 100. The relative
performance of tires depends upon the
actual conditions of their use, however,
and may depart significantly from the
norm due to variations in driving habits,
service practices, and differences in
road characteristics and climate.
TRACTION GRADES
The Traction grades, from highest to
lowest, are AA, A, B, and C. These
grades represent the tire's ability to
stop on wet pavement, as measured
under controlled conditions on
specified government test surfaces of
asphalt and concrete. A tire marked C
may have poor traction performance.
TEMPERATURE GRADES
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 vehicle 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.
STORING THE VEHICLE
If the vehicle is left inactive for longer than a
month, the following precautions should be
observed:
Park the vehicle in an area that is covered and
dry, and well-ventilated if possible. Slightly
open the windows.
Check that the Electric Park Brake (EPB) is
not activated.
Carry out the “Liftgate Emergency Opening”
procedure
Ú
page 62.
Disconnect the negative battery terminal and
check the battery charge. Repeat this check
once every three months during storage.
If the battery is not disconnected from the
electrical system, check its state of charge
every 30 days.
Clean and protect the painted parts using
protective wax.
WARNING!
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.
WARNING!
The temperature grade for this tire is
established for a tire that is properly inflated
and not overloaded. Excessive speed,
under-inflation, or excessive loading, either
separately or in combination, can cause heat
buildup and possible tire failure.
23_GU_OM_EN_USC_t.book Page 238

242

TECHNICAL SPECIFICATIONS
For the enthusiasts, the technician, or those who
just want to know every detail of their vehicle,
useful information on understanding how your
vehicle works is contained in this chapter and
illustrated with data, tables, and graphics.
VEHICLE IDENTIFICATION
NUMBER (VIN)
The VIN is stamped on a plate on the front left
corner of the dashboard trim, which can be seen
from outside the vehicle, through the windshield.Windshield VIN Location
VEHICLE IDENTIFICATION NUMBER (VIN)
P
LATE
The plates are located on the left side A-pillar and
contain the following data:
Vehicle Identification Number (VIN).
Vehicle type (USA and Canada only).
Color code.
Place of manufacturing of the vehicle
(USA and Mexico only).
Vehicle manufacturing date.
Maximum permitted weights.
Permitted tire inflation pressure
(USA and Canada only).
ENGINE
2.0L Engine
Cycle Four
Number and position of cylinders 4 inline
Piston bore and stroke (mm) 84 / 90
Total displacement (cm³) 1,995
Compression ratio 10:1
Maximum power (SAE) (HP) 280
Maximum power (kW) 209
Corresponding engine speed (RPM) 5,200
Maximum torque (SAE) (ft-lb) 295
Maximum torque (Nm) 400
23_GU_OM_EN_USC_t.book Page 242

243

POWER SUPPLY
Corresponding engine speed (RPM)2,250 - 4,000
Fuel 87 Octane Minimum (R+M)/2 Method,
91 Recommended, ethanol percentage is 0–15%.
2.9L Engine
Cycle Four
Number and position of cylinders 6 / V
Piston bore and stroke (mm) 86.5 × 82
Total displacement (cm³) 2,891
Compression ratio 9.3:1
Maximum power (SAE) (HP) 505
Maximum power (kW) 375
Corresponding engine speed (RPM) 6,500
Maximum torque (SAE) (ft-lb) 443
Maximum torque (Nm) 600
Corresponding engine speed (RPM) 2,500
Fuel 87 Octane Minimum (R+M)/2 Method,
91 Recommended, ethanol percentage is 0–15%.
Power supply
2.0L Engine Electronic timed sequential injection with knock control
Power supply
2.9L EnginePhased sequential electronic injection with knock control and
variable intake valve actuation
2.0L Engine
23_GU_OM_EN_USC_t.book Page 243

TECHNICAL SPECIFICATIONS

244

TRANSMISSION
BRAKES
VersionTransmissionTraction
2.0L EngineEight Forward Gears Plus ReverseAll-Wheel Drive
2.0L Engine Eight Forward Gears Plus ReverseRear-Wheel Drive
VersionTransmissionTraction
2.9L Engine Eight Forward Gears Plus ReverseAll-Wheel Drive
VersionFront brakesRear brakesParking brake
2.0L Engine and 2.9L Engine DiscDiscElectric
CAUTION!
Water, ice and salt spread on the roads may deposit on the brake discs, reducing braking efficiency the first time the brakes are applied.
To obtain the maximum efficiency of the braking system, a bedding-in period of about 300 miles (500 km) is needed: during this period it is better to
avoid sharp, repeated and prolonged braking.
23_GU_OM_EN_USC_t.book Page 244

TECHNICAL SPECIFICATIONS

246

DIMENSIONS
Dimensions are expressed in inches and refer to the vehicle equipped with its standard-supplied tires. Height is measured with vehicle unladen.
Small variations with respect to the reported values are possible depending on the dimensions of the rims.
A
Front
OverhangB
WheelbaseC
Rear
OverhangD
Overall LengthE
Overall HeightF
Front TrackG
Rear Track
H
Overall
Width (Incl. Mirrors)I
Overall Width
(Excl. Mirrors)
33.9 inches (862 mm) 111 inches
(2,818 mm) 39.7 inches
(1,008 mm) 184.6 inches
(4,688 mm) 66 inches
(1,677 mm) 63.5 inches
(1,612 mm) 65 inches
(1,650 mm) 85.2 inches
(2,163 mm) 74.9 inches
(1,903 mm)
23_GU_OM_EN_USC_t.book Page 246

TECHNICAL SPECIFICATIONS

248

WEIGHTS
Weights2.0L Engine AWD2.0L Engine RWD
Unladen weight (with all fluids, fuel tank filled to
90% and without optional equipment) 4,006 lb
3,896 lb
Payload including the driver
1
1. If special equipment is fitted (trailer towing equipment, etc.) the empty weight will increase and consequently the payload will decrease in relation to the maximum permitted loads.
992 lb 992 lb
Maximum permitted loads
2
2. Loads not to be exceeded. The user is responsible for arranging goods in the luggage compartment and/or on the load platform within the maximum permitted loads.
242 lb 242 lb
Front axle 2,491 lb2,403 lb
Rear axle 2,976 lb2,932 lb
Total 5,247 lb5,115 lb
Towable loads --
Braked trailer 3,000 lb (1,360 kg)3,000 lb (1,360 kg)
Unbraked trailer 1,000 lb (454 kg)1,000 lb (454 kg)
Maximum load on roof 165 lb (75 kg)165 lb (75 kg)
Maximum load on tow hitch (braked trailer) 300 lb (136 kg)300 lb (136 kg)
23_GU_OM_EN_USC_t.book Page 248