Alfa Romeo 4C Spider 2020, Owner'S Manual

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SERVICING AND MAINTENANCE 139
(Continued)
T
IRE
C
HAINS
(T
RACTION
D
EVICES
)
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
projection of 7 mm beyond the tire profile
can be fitted on vehicles equipped with
235/40 R18 rear tire.
T
IRE
R
OTATION
R
ECOMMENDATIONS
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, developed a specific high perfor -
mance tire for the 4C model. A dedicated Pirelli
PZero, identified with an AR mark, guarantees
this vehicle to obtain the highest performance
capable.
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.
T
READWEAR
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.
CAUTION!
To avoid damage to your vehicle or tires,
observe the following precautions:

Because of restricted traction device clear -
ance between tires and other suspension
components, it is important that only trac -
tion 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
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! (Continued)
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