Ferrari 458 Italia Technical Documentation Manual page 814

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Tyres and rims
Balance the wheels (
Wheel balancing
Only use self-adhesive counterweights. In addition to damaging the wheel rim, other types of
counterweights can interfere with parts of the suspension or detach while driving.
Do not touch the adhesive surface of the counterweight before applying to the rim and never reuse
counterweights or use weights with no protective paper, as these may detach while driving.
After replacing a tyre, wheel rim, or both, the wheel must be statically and dynamically balanced using a
balancing machine and suitable counterweights.
Manufacturers identify the heaviest part of the wheel rim and the tyre with a reference mark. When mounting the
tyre onto the rim, always set these reference marks opposite each other to minimise the amount of
counterweights necessary for balancing.
D2.02).
To ensure that the bead is mounted correctly, inflate
the tyre immediately, while the beads are still
lubricated.
The tyre must be inflated to activate the tyre
pressure monitoring system sensor. Inflate the
tyre to a pressure greater than 0.6 bar and
keep inflated at this pressure for a few
minutes.
If the maximum permissible inflation pressure of
(3.2 bar / 44 psi) is not sufficient to seat the
beads, lubricate again.
The counterweights must be applied in position (A)
on the inner edge of the wheel rim, in position
(B), or in both positions if necessary.
Thoroughly clean the wheel rim surface onto which
the counterweight will be applied with heptane.
Remove the protective backing and affix the
counterweight onto the wheel rim, pressing
evenly to ensure that it adheres perfectly.
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