Tyre Grades; Dot Rating; Tread Wear; Traction - Ferrari 458 Italia Technical Documentation Manual

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Tyres and rims
CAUTION
Never fit a tyre with tread depth under the specified limit, even if only in a single localised area.
Check the tread depth: the minimum permissible value is 1.7 mm. This depth is identified by the tyre wear
indicators.
Check the wear over the entire tread; in the event of uneven tread wear, perform static and dynamic wheel
balancing.
Note that in order to mount conventional tyres on a vehicle that has been fitted with Run Flat tyres, the
instrument panel must be reprogrammed as the TFT display will display a warning message.
Replace any tyres that have been punctured and/or been inflated with the tyre inflation bottle included with
vehicle toolkit. For safety reasons, we do not recommend attempting to repair punctured tyres.

Tyre grades

All passenger car tires must conform to Federal Safety requirements, in addition to these grades.

DOT rating

Tread wear

Pirelli P Zero
220 (Front) – 160
Tread wear
The tread wear 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 (1 1/2) 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

The traction grades, from highest to lowest, are "AA", "A", "B" and "C". Those grades represent the tyre'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" has poor traction performance.
The traction rating given to a tyre is based on straight line braking tests and does not take other factors
such as acceleration, steering angle, aquaplaning or traction peaks into account.
Traction
AA
(Rear)
Temperature
A
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