2018 Alfa Romeo 4C tire size

CAUTION!(Continued)
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 compo-
nents. This activity will remove the red rust on the
brake rotors and prevent vehicle vibration when brak-
ing.
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
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.
CAUTION!
To avoid damage to your vehicle or tires, observe
the following precautions:
•
Because of restricted traction device clearance be-
tween tires and other suspension components, it is
important that only traction devices in good condi-
tion 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.
(Continued)
8
SERVICING AND MAINTENANCE 237

CAUTION!(Continued)
•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).
• 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.
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
238 SERVICING AND MAINTENANCE

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
246 TECHNICAL SPECIFICATIONS

Cold Weather........................ .130
Engine Fails To Start ....................130
Steering ................................26
Column Lock ..........................26
Tilt Column ...........................26
Wheel, Tilt ............................26
Storage .............................. .240
Storage, Vehicle ........................ .240
Storing Your Vehicle ..................... .240
Supplemental Restraint System - Air Bag ........104
Telescoping Steering Column .................26
Tilt Steering Column .......................26
Tire And Loading Information Placard .........222
Tire Markings .......................... .217
Tires ...................... .126, 226, 233, 238
Aging (Life Of Tires) ....................230
Air Pressure ......................... .226
Chains ............................. .237
Changing ........................... .216
Compact Spare ....................... .233
General Information .................226, 233
High Speed ......................... .228
Inflation Pressures .....................227
Jacking ............................ .216Life Of Tires
......................... .230
Load Capacity .....................222, 223
Pressure Monitor System (TPMS) ............88
Pressure Warning Light ...................72
Quality Grading ...................... .238
Radial ............................. .228
Replacement ......................... .231
Rotation ............................ .238
Safety .......................... .216, 226
Sizes .............................. .218
Snow Tires .......................... .233
Spare Tire ....................... .233, 235
Spinning ........................... .229
T

read Wear Indicators ...................230
Wheel Nut Torque .....................246
Tire Safety Information ....................216
To Open Deck Lid ........................43
Towing .............................. .151
Disabled Vehicle ...................... .181
Recreational ......................... .151
Towing Eyes ........................... .181
Towing Vehicle Behind A Motorhome ..........151
Traction .............................. .152
Trailer Towing ......................... .151
274 INDEX