2018 Alfa Romeo 4C Spider tire size

CAUTION!
Do not use scouring pads, steel wool, a bristle
brush, metal polishes or oven cleaner. These prod-
ucts may damage the wheel’s protective finish.
Such damage is not covered by the New Vehicle
Limited Warranty. Only car wash soap, Mopar
Wheel Cleaner or equivalent is recommended.
NOTE:
If you intend parking or storing your vehicle for
an extended period after cleaning the wheels with wheel
cleaner, drive your vehicle and apply the brakes to
remove the water droplets from the brake components.
This activity will remove the red rust on the brake rotors
and prevent vehicle vibration when braking.
Dark Vapor Chrome, Black Satin Chrome, or Low
Gloss Clear Coat Wheels
CAUTION!
If your vehicle is equipped with these specialty
wheels, DO NOT USE wheel cleaners, abrasives, or
polishing compounds. They will permanently dam-
age this finish and such damage is not covered by
(Continued)
CAUTION! (Continued)
the New Vehicle Limited Warranty. HAND WASH
ONLY USING MILD SOAP AND WATER WITH A
SOFT CLOTH. Used on a regular basis; this is all
that is required to maintain this finish.
Tire Chains (Traction Devices)
Use of traction devices require sufficient tire-to-body
clearance. Follow these recommendations to guard
against damage.
•Traction device must be of proper size for the tire, as
recommended by the traction device manufacturer.
• Install on Rear Tires Only.
• Reduced size snow chains with a maximum projec-
tion of 7 mm beyond the tire profile can be fitted on
vehicles equipped with 235/40 R18 rear tire.
250 SERVICING AND MAINTENANCE

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 prolonged period on dry pave-
ment.
• Observe the traction device manufacturer ’s in-
structions on the method of installation, operat-
ing speed, and conditions for use. Always use the
suggested operating speed of the device manufac-
turer ’s if it is less than 30 mph (48 km/h).
(Continued)
CAUTION! (Continued)
•Do not use traction devices on a compact spare
tire.
Tire Rotation Recommendations
Due to tire design and size, tire rotations on this vehicle
are not possible.
NOTE: For AR 4C models, where available, the vehicle
may be equipped with high performance tires that
guarantee high grip performance with little increase of
wear. Alfa Romeo, in collaboration with Pirelli, devel-
oped a specific high performance tire for the 4C model.
A dedicated Pirelli PZero, identified with an AR mark,
guarantees this vehicle to obtain the highest perfor-
mance capable.
DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES
The following tire grading categories were estab-
lished by the National Highway Traffic Safety Ad-
ministration. The specific grade rating assigned by
the tire’s manufacturer in each category is shown on
the sidewall of the tires on your vehicle. 8
SERVICING AND MAINTENANCE 251

VEHICLE IDENTIFICATION NUMBER
The Vehicle Identification Number (VIN) is found on
the left front corner of the instrument panel, visible
through the windshield. This number also appears
engraved on an Aluminum plate glued and riveted on
the floor crossmember under the passenger seat.
NOTE:It is illegal to remove or alter the VIN.
WHEEL AND TIRE TORQUE SPECIFICATIONS
Proper lug nut/bolt torque is very important to ensure
that the wheel is properly mounted to the vehicle. Any
time a wheel has been removed and reinstalled on the
vehicle, the lug nuts/bolts should be torqued using a
properly calibrated torque wrench using a high quality
six sided (hex) deep wall socket.
Torque Specifications
Lug Nut/Bolt
Torque **Lug Nut/
Bolt Size Lug Nut/Bolt
Socket Size
72 Ft-Lbs (98 N·m) M12 x 1.25 17 mm
**Use only your authorized dealer recommended lug
nuts/bolts and clean or remove any dirt or oil before
tightening.
Vehicle Identification Number
260 TECHNICAL SPECIFICATIONS

Sizes.............................. .231
Snow Tires .......................... .246
Spare Tire ....................... .246, 248
Spinning ........................... .242
Tread Wear Indicators ...................242
Wheel Nut Torque .....................260
Tire Safety Information ....................229
To Open Deck Lid ........................51
Towing .............................. .161
Disabled Vehicle ...................... .192
Recreational ......................... .161
Towing Eyes ........................... .192
Towing Vehicle Behind A Motorhome ..........161
Traction ........................... .162, 163
Trailer Towing ......................... .161
Transaxle Automatic ............................17
Transmission .......................... .143
Automatic .......................... .143
Fluid .............................. .228
Maintenance ......................... .228
Transporting Pets ....................... .131
Tread Wear Indicators .....................242
Turn Signals .............................84 Uniform Tire Quality Grades
................251
Unleaded Gasoline ...................... .262
Untwisting Procedure, Seat Belt ..............107
Vehicle Identification Number (VIN) ...........260
Vehicle Loading ........................ .236
Vehicle Modifications/Alterations ..............6
Vehicle Security Alarm (Security Alarm) .........20
Vehicle Storage ......................... .253
Warning Flasher, Hazard ...................166
Warning Lights (Instrument Cluster Description) . . .83
Warnings And Cautions .....................6
Warranty Information .....................277
Washer Adding Fluid ........................ .208
Washers, Windshield .......................
34
Washing Vehicle ........................ .254
Water Driving Through ...................... .163
Wheel And Wheel Trim ....................249
Wheel And Wheel Trim Care ................249
Windows ...............................42
Power ...............................42
12
INDEX 289