Mercedes-Benz Mercedec-AMG GT R Owner's Manual page 118

When driving on a racetrack, make sure that the
brake fluid is not more than 12 months old.
Brake callipers, brake hoses and brake lines
Check the following for damage each time
before driving the vehicle on a racetrack:
The dust boots on the brake callipers
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The brake hoses and brake lines
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Replace them if necessary.
Brake cooling
Special air deflectors and channels are fitted to
the front and rear axles so that the brakes are
cooled sufficiently. They supply the brake disks
with cooling air. Check that they are in perfect
condition and correctly fitted each time before
driving the vehicle on a racetrack. Excessive
wear can be caused by driving over kerbs, for
instance. For this reason, regularly check they
are all complete and fitted securely.
In addition, check that the air guide plates are
seated securely and clean before and after driv‐
ing the vehicle on a racetrack.
Observe the information on the cooling of com‐
ponents which are subject to strain in when driv‐
ing on a racetrack ( page 113).
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Wheels and tyres
Notes on wheels
* NOTE Restrictions relating to suspension
settings and driving characteristics
Driving with wheels with differing dimensions
of the following features could lead to restric‐
tions relating to the suspension settings and
driving characteristics of the vehicle:
diameter
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wheel offset
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Only use the wheels provided by
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Mercedes-AMG for use on a racetrack.
Only use wheels with approved geome‐
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try.
Do not use slick tyres. Suspension and body
components may otherwise be subjected to
excessively high loads.
Driving and parking 115
Observe the following notes on changing a
wheel:
change the wheels after 15,000 km on a
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racetrack at the latest.
to ensure concentricity and lateral trueness,
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check the wheel contact surface for damage
when changing a wheel. These should also
be measured in the event of imbalance.
The wheel bolts are subjected to high wear when
used on a racetrack. To ensure the wheels are
bolted securely on a permanent basis, replace
the wheel bolts in the following situations:
after approximately 1,000 km on a racetrack.
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after ten bolting procedures at the latest.
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Notes on tyres
& WARNING Risk of injury due to damaged
tyres
Damaged tyres can cause tyre pressure loss.
Check the tyres regularly for signs of
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damage and replace any damaged tyres
immediately.