2020 MERCEDES-BENZ AMG GT R-ROADSTER boot

When driving on a
racetrac k,make sure that the
brake fluid is not more than 12 months old.
Brake callipers, brake hoses and brake lines
Check thefo llowing for dama geeach time
before driving theve hicle on a racetrack:
R The du stboots on the brake callipers
R The brake hoses and brake lines
Re place them if necessar y.
Brake cooling
Special air deflectors and channels are fitted to
th e front and rear axles so that the brakes are
cooled suf ficiently. They supply the brake disks
with cooling air. Check that they are in per fect
condition and cor rectly fitted ea chtime be fore
driving theve hicle on a racetrac k.Excessi ve
we ar can be caused bydriving overke rbs, for
ins tance. Forth is reason, regularly check they
are all comple teand fitted securely.
In addition, check that the air guide plates are
seated securely and clean before and af ter driv‐
ing theve hicle on a racetrac k. Obser
vethe information on the cooling of com‐
ponents which are subject tostra in in when driv‐
ing on a racetrack (/ page 113). Wheels and tyres
Note
s on wheels
* NO
TERestrictions relating tosuspension
settings and driving characteristics Driving with wheels with dif
fering dimensions
of thefo llowing features could lead torestric‐
tions relating tothe suspension settings and
driving characteristics of theve hicle:
R diame ter
R wheel of fset #
Only use the wheels pr ovided by
Mercedes-AMG for use on a racetrac k. #
Only use wheels with appr ovedge ome‐
tr y. Do not use slick tyres. Suspension and body
components may
otherwise be subjected to
exc essively high loads. Obser
vethefo llowing no tes on changing a
wheel:
R change the wheels af ter15 ,000 km on a
ra cetrack at the latest.
R toensure concent ricity and la tera l trueness,
ch eck the wheel conta ct surfacefor dama ge
when changing a wheel. These should also
be measured in theeve nt of imbalance.
The wheel bolts are subjected tohigh wear when
used on a racetrac k.To ensure the wheels are
bolted securely on a permanent basis, replace
th e wheel bolts in thefo llowing situations:
R afte r appro ximately 1,000 km on a racetrac k.
R afte rte n bolting procedu res at the latest.
Note s on tyres &
WARNING Risk of injury duetodamaged
tyres
Damaged tyres can cause tyre pressure loss. #
Check the tyres regularly for signs of
dama geand replace any damaged tyres
immediatel y. Driving and pa
rking 11 5

shop. The new wheel must ha
vethe
cor rect dimensions. Obser
vethefo llowing no tes on fitting an emer‐
ge ncy spa rewheel:
R Check the tyre pressure of the emer gency
spa rewheel fitted. Co rrect the pressure as
necessar y.
R The maximum permissible speed with an
emer gency spa rewheel fitted is 80 km/h.
R Do not fit th e emer gency spa rewheel with
sn ow ch ains.
R Replace the emer gency spa rewheel af ter six
ye ars at the latest, rega rdless of wear.
% Ve
hicles with a tyre pressure monitoring
sy stem: if an emer gency spa rewheel is fit‐
te dth e tyre pressure monitoring sy stem can‐
not function reliabl y.Fo r a few minutes af ter
an emer gency spa rewheel is fitted, the sys‐
te m may still display the tyre pressure of the
re mo ved wheel. Only restart the sy stem
again when the emer gency spa rewheel has
been replaced with a new wheel. Be sure
toalso obse rveth efo llowing fur ther
re lated subjects:
R Notes on tyre pressure (/ page 322)
R Tyre pressure table (/ page 323)
R Notes on fitting tyres (/ page 325) Inflating
the emer gency spare wheel *
NO
TEOverheating due tothe tyre infla‐
tion compressor running too long #
Do not runth e tyre inflation compres‐
sor for longer than ten minu tes without
inter ruption. Re
quirements:
Comply with the manufacturer's saf ety no tes on
th est icke r of the emer gency spa rewheel and on
th e tyre inflation compressor. #
Remo vesticke r with the label 80 km/h from
th e tyre inflation compressor housing and
af fix it tothe instrument clus ter within the
driver's field of vision. #
Remo vethe tyre inflation compressor from
th estow agewell under the boot floor .
(/ page 306) #
Pull filler hose 1and plug 3out of the tyre
inflation compressor housing. #
Insert plug 7offiller hose 1inthe soc ket
on the tyre inflation compressor and then
turn it until plug 7engages. #
Unscr ew the cap from theva lve on the emer‐
ge ncy spa rewheel. #
Screw union nut 2offiller hose 1onto
va lve. 336
Wheels and tyres

Selecting a media pl
ayer ..................... 275
Boot lid see Tailgate
Brake Assist Sy stem
see BAS (Brake Assi stSystem)
Brake fluid
No tes .................................................. 344
Brake forc e distribution
EBD (Elect ronic Brake forc e Distribu‐
tion) ..................................................... 13 5
Brake sy stem
ABS ...................................................... 11 4
Brake callipers ..................................... 11 5
Brake cooling ....................................... 11 5
Brake discs .......................................... 11 4
Brake fluid ............................................ 11 4
Brake hose .......................................... .115
Brake line ............................................. 11 5
Brake pads .......................................... .114
No tes ................................................... 11 4
Brakes ABS (Anti-lock Braking Sy stem) ........... 13 2
Ac tive Brake Assi st.............................. 13 5
Ad aptive brake lights ...........................1 38AMG ceramic high-per
form ance
composite brake sy stem ......................1 11
BA S (Brake Assi stSystem) .................. 13 2
Driving tips .......................................... 107
EBD (Electronic Brake forc e Distribu‐
tion) ..................................................... 13 5
HOLD function .................................... .145
Limi ted braking ef fect (salt-treated
ro ads) .................................................. 107
New/replaced brakepads/brake
discs .................................................... 106
Ru nning-in no tes ..................................1 06
Braking assi stance
see BAS (Brake Assi stSystem)
Breakdown Overview of the help functions .............. 14
To w- starting ........................................ .318
To wing away ......................................... 315
Tr ansporting theve hicle ....................... 317
Wheel change ...................................... 330
Breakdown see Flat tyre Bu
rm ester ®
high-end Sur round sound
sy stem ...................................................... 287
Ad justing the balance .......................... 288
Ad justing the sound optimisation ........ 288
Ad justing treble, mid-range and bass
settings ............................................... 288
Au tomatic volume adjustment ............ .288
Calling up the sound menu .................. 287
Information .......................................... 287
Selecting the sound profile .................. 288
Burmes ter®
sur round sound sy stem .....2 86
Ad justing the balance .......................... 287
Ad justing treble, mid-range and bass
settings ............................................... 287
Au tomatic volume adjustment ............ .287
Calling up the sound menu .................. 287
Information .......................................... 286
Switching the sur round sound on/off
............................................................ .287
Buttons Steering wheel .....................................1 64 Index
407