2018 Alfa Romeo 4C Spider tire type

Fuel Economy
Underinflated tires will increase tire rolling resistance
resulting in higher fuel consumption.
Tread Wear
Improper cold tire inflation pressures can cause abnor-
mal 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 pre-
vent 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 pres-
sure 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
240 SERVICING AND MAINTENANCE

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
conditions are 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 origi-
nal equipment vehicle dealer for recommended safe
operating speeds, loading and cold tire inflation pres-
sures.
WARNING!
High speed driving with your vehicle under maxi-
mum load is dangerous. The added strain on your
tires could cause them to fail. You could have a
(Continued)
WARNING!(Continued)
serious collision. Do not drive a vehicle loaded to
the maximum capacity at continuous speeds above
75 mph (120 km/h).
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. Al-
ways 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 tha na¼ofaninch (6 mm).
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SERVICING AND MAINTENANCE 241

WARNING!(Continued)
•Never use a tire with a smaller load index or
capacity, other than what was originally equipped
on your vehicle. Using a tire with a smaller load
index could result in tire overloading and failure.
You could lose control and have a collision.
• Failure to equip your vehicle with tires having
adequate speed capability can result in sudden
tire failure and loss of vehicle control.
CAUTION!
Replacing original tires with tires of a different size
may result in false speedometer and odometer read-
ings.
Tire Types
All Season Tires — If Equipped
All Season tires provide traction for all seasons (Spring,
Summer, Fall, and Winter). Traction levels may vary
between different all season tires. All season tires can be
identified by the M+S, M&S, M/S or MS designation on the tire sidewall. Use all season tires only in sets of four;
failure to do so may adversely affect the safety and
handling of your vehicle.
Summer Or Three Season Tires — If Equipped
Summer tires provide traction in both wet and dry
conditions, and are not intended to be driven in snow or
on ice. If your vehicle is equipped with Summer tires, be
aware these tires are not designed for Winter or cold
driving conditions. Install Winter tires on your vehicle
when ambient temperatures are less than 40°F (5°C) or
if roads are covered with ice or snow. For more infor-
mation, contact an authorized dealer.
Summer tires do not contain the all season designation
or mountain/snowflake symbol on the tire sidewall.
Use Summer tires only in sets of four; failure to do so
may adversely affect the safety and handling of your
vehicle.
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SERVICING AND MAINTENANCE 245

WARNING!
Do not use Summer tires in snow/ice conditions.
You could lose vehicle control, resulting in severe
injury or death. Driving too fast for conditions also
creates the possibility of loss of vehicle control.
Snow Tires
Some areas of the country require the use of snow tires
during the Winter. Snow tires can be identified by a
“mountain/snowflake” symbol on the tire sidewall.If you need snow tires, select tires
equivalent in size and type to the
original equipment tires. Use snow
tires only in sets of four; failure to do
so may adversely affect the safety
and handling of your vehicle.
Snow tires generally have lower speed ratings than
what was originally equipped with your vehicle and
should not be operated at sustained speeds over 75 mph
(120 km/h). For speeds above 75 mph (120 km/h) refer
to original equipment or an authorized tire dealer for
recommended safe operating speeds, loading and cold
tire inflation pressures. While studded tires improve performance on ice, skid
and traction capability on wet or dry surfaces may be
poorer than that of non-studded tires. Some states
prohibit studded tires; therefore, local laws should be
checked before using these tire types.
Spare Tires — If Equipped
NOTE:
For vehicles equipped with Tire Service Kit
instead of a spare tire, please refer to “Tire Service Kit”
in “In Case Of Emergency” for further information.
CAUTION!
Because of the reduced ground clearance, do not
take your vehicle through an automatic car wash
with a compact or limited use temporary spare
installed. Damage to the vehicle may result.
Spare Tire Matching Original Equipped Tire And
Wheel — If Equipped
Your vehicle may be equipped with a spare tire and
wheel equivalent in look and function to the original
equipment tire and wheel found on the front or rear
axle of your vehicle. This spare tire may be used in the
246 SERVICING AND MAINTENANCE

Adding Engine Coolant (Antifreeze)...........221
Adding Fuel ........................... .159
Adding Washer Fluid .....................208
Additives, Fuel ......................... .263
AirBag ...............................112 Air Bag Operation ......................114
Air Bag Warning Light ..................111
Driver Knee Air Bag ....................115
Enhanced Accident Response ..............195
Event Data Recorder (EDR) ...............195
If A Deployment Occurs .................118
Knee Impact Bolsters ....................115
Maintaining Your Air Bag System ...........122
Transporting Pets ..................... .131
Air Bag Light .....................79, 111, 133
Air Bag Maintenance ..................... .122
Air Cleaner, Engine (Engine Air Cleaner Filter) . . .213
Air Conditioner Maintenance ................214
Air Conditioning Refrigerant .............214, 215
Air Conditioning System ...................214
Air Filter ............................. .213
Air Pressure, Tires ....................... .240
Alarm System (Security Alarm) ...............20
Alfa DNA System (Dynamic Car Control System) .148 Alfa Twin Clutch Transmission............85, 143
Fluid Type ....................... .229, 268
Alterations/Modifications, Vehicle ..............6
Antifreeze (Engine Coolant) ..............221, 266
Capacities .......................... .266
Disposal ............................ .223
Anti-Lock Brake System (ABS) ................90
Anti-Lock Warning Light ....................82
Automatic Transaxle .......................17
Automatic Transmission ...................143
Fluid Type .......................... .268
Auxiliary Electrical Outlet (Power Outlet) ........58
Battery ............................ .79, 211
Charging System Light ...................79
Keyless Key Fob Replacement ..............16
Belts, Seat ............................. .133
Body Mechanism Lubrication ................215
B-Pillar

Location ........................ .235
Brake Fluid ........................... .268
Brake, Parking ......................... .141
280 INDEX