2012 INFINITI G-CONVERTIBLE tire type

all four wheels.
Snow tiresGUID-F39DC593-D9CC-4031-A698-A6D6CC4F8C92If snow tires are needed, it is necessary to
select tires equivalent in size and load
rating to the original equipment tires. If
you do not, it can adversely affect the
safety and handling of your vehicle.
Generally, snow tires will have lower speed
ratings than factory equipped tires and
may not match the potential maximum
vehicle speed. Never exceed the maximum
speed rating of the tire.
If you install snow tires, they must be the
same size, brand, construction and tread
pattern on all four wheels.
For additional traction on icy roads,
studded tires may be used. However, some
U.S. states and Canadian provinces prohi-
bit their use. Check local, state and
provincial laws before installing studded
tires. Skid and traction capabilities of
studded snow tires, on wet or dry surfaces,
may be poorer than that of non-studded
snow tires.
TIRE CHAINSGUID-6A88FBD9-125B-4B3A-A7FE-FA86DDB25535Use of tire chains may be prohibited
according to location. Check the local laws
before installing tire chains. When instal-
ling tire chains, make sure they are the
proper size for the tires on your vehicle and
are installed according to the chain man-
ufacturer’s suggestions.Use only SAE
Class S chains. Class“S”chains are used
on vehicles with restricted tire to vehicle
clearance. Vehicles that can use Class “S”
chains are designed to meet the SAE
standard minimum clearances between
the tire and the closest vehicle suspension
or body component required to accommo-
date the use of a winter traction device (tire
chains or cables). The minimum clearances
are determined using the factory equipped
tire size. Other types may damage your
vehicle. Use chain tensioners when recom-
mended by the tire chain manufacturer to
ensure a tight fit. Loose end links of the
tire chain must be secured or removed to
prevent the possibility of whipping action
damage to the fenders or underbody. If
possible, avoid fully loading your vehicle
when using tire chains. In addition, drive at
a reduced speed. Otherwise, your vehicle
may be damaged and/or vehicle handling and performance may be adversely af-
fected.
Tire chains must be installed only on the
rear wheels and not on the front wheels.
Never install tire chains on a TEMPORARY
USE ONLY spare tire.
Do not use tire chains on dry roads. Driving
with tire chains in such conditions can
cause damage to the various mechanisms
of the vehicle due to some overstress.
CHANGING WHEELS AND TIRESGUID-C94141C8-4836-48A9-86D8-553C9002837B
Tire rotationGUID-459433F2-B0E8-444A-873B-B8B7A6064585Tires cannot be rotated on this
vehicle because the front tires are a
different size than the rear tires.
A pin is on the front brake rotor to
prevent the rear wheels from being
installed in place of the front wheels.
The spare tire can be installed in
place of the front and rear wheels.
When installing the spare tire in the
front wheel, the hole in the spare tire
wheel must be aligned with the pin
on the brake rotor.
Maintenance and do-it-yourself8-35

Replacing wheels and tiresGUID-9715A1ED-EE7A-41C8-9DA9-0A2EB272D8BAWhen replacing a tire, use the same size,
tread design, speed rating and load carry-
ing capacity as originally equipped. (See
“Specifications”(P.9-8) for recommended
types and sizes of tires and wheels.)
WARNING
. The use of tires other than those
recommended or the mixed use of tires
of different brands, construction (bias,
bias-belted or radial), or tread patterns
can adversely affect the ride, braking,
handling, ground clearance, body-to-tire
clearance, tire chain clearance, speed-
ometer calibration, headlight aim and
bumper height. Some of these effects
may lead to accidents and could result in
serious personal injury.
. If the wheels are changed for any
reason, always replace with wheels
which have the same off-set dimension.
Wheels of a different off-set could cause
premature tire wear, degrade vehicle
handling characteristics and/or interfer-
ence with the brake discs/drums. Such
interference can lead to decreased brak- ing efficiency and/or early brake pad/
shoe wear. See
“Wheels and tires” (P.9-
9) of this manual for wheel off-set
dimensions.
. When a spare tire is mounted or a wheel
is replaced, the TPMS will not function
and the low tire pressure warning light
will flash for approximately 1 minute.
The light will remain on after 1 minute.
Contact your INFINITI retailer as soon as
possible for tire replacement and/or
system resetting.
. Replacing tires with those not originally
specified by INFINITI could affect the
proper operation of the TPMS.
. Do not install a damaged or deformed
wheel or tire even if it has been repaired.
Such wheels or tires could have struc-
tural damage and could fail without
warning.
. The use of retread tire is not recom-
mended.
. For additional information regarding
tires, refer to “Important Tire Safety
Information” (US) or“Tire Safety Infor-
mation” (Canada) in the Warranty Infor-
mation Booklet.
Wheel balanceGUID-B04D94A2-8C9A-4662-A08E-3F7335A6B729Unbalanced wheels may affect vehicle
handling and tire life. Even with regular
use, wheels can get out of balance. There-
fore, they should be balanced as required.
Wheel balance service should be per-
formed with the wheels off the vehicle.
Spin balancing the wheels on the vehicle
could lead to mechanical damage.
For additional information regarding tires,
refer to “Important Tire Safety Information”
(US) or “Tire Safety Information” (Canada)
in the INFINITI Warranty Information Book-
let.
Care of wheelsGUID-700A8910-ACB9-4129-951B-D744E6E71328. Wash the wheels when washing the
vehicle to maintain their appearance.
. Clean the inner side of the wheels when
the wheel is changed or the underside
of the vehicle is washed.
. Do not use abrasive cleaners when
washing the wheels.
. Inspect wheel rims regularly for dents
or corrosion. Such damage may cause
loss of pressure or poor seal at the tire
bead.
Maintenance and do-it-yourself8-37

8-38Maintenance and do-it-yourself
.INFINITI recommends that the road
wheels be waxed to protect against
road salt in areas where it is used
during winter.
Spare tire (TEMPORARY USE ONLY
(T-type) spare tire) (if so equipped)
GUID-B42A4A7B-879D-4F0E-A902-69FB4ABCC6B8Observe the following precautions if the T-
type spare tire must be used, otherwise
your vehicle could be damaged or involved
in an accident.
WARNING
. The T-type spare tire should be used for
emergency use. It should be replaced
with the standard tire at the first
opportunity to avoid possible tire or
differential damage.
. Drive carefully while the TEMPORARY
USE ONLY spare tire is installed. Avoid
sharp turns and abrupt braking while
driving.
. Periodically check spare tire inflation
pressure. Always keep the pressure of
the TEMPORARY USE ONLY spare tire at
60 psi (420 kPa, 4.2 bar). Always keep
the pressure of the full size spare tire (if
so equipped) at the recommended pres- sure for standard tires, as indicated on
the Tire and Loading Information label.
For Tire and Loading Information label
location, see
“Tire and Loading Informa-
tion label” in the index of this manual.
. With the TEMPORARY USE ONLY spare
tire installed do not drive your vehicle at
speeds faster than 50 MPH (80 km/h).
. When driving on roads covered with
snow or ice, the TEMPORARY USE ONLY
spare tire should be used on the front
wheels and original tire used on the rear
wheels (drive wheels). Use tire chains
only on the two rear original tires.
. Tire tread of the TEMPORARY USE ONLY
spare tire will wear at a faster rate than
the standard tire. Replace the spare tire
as soon as the tread wear indicators
appear.
. Do not use the spare tire on other
vehicles.
. Do not use more than one spare tire at
the same time.
CAUTION
.Do not use tire chains on a TEMPORARY
USE ONLY spare tire. Tire chains will not
fit properly and may cause damage to
the vehicle.
. Because the TEMPORARY USE ONLY
spare tire is smaller than the original
tire, ground clearance is reduced. To
avoid damage to the vehicle, do not
drive over obstacles. Also do not drive
the vehicle through an automatic car
wash since it may get caught.
Emergency tire puncture repair kit
(if so equipped)
GUID-FAD28AE4-EFCF-49D5-B78F-E11D9F52D1B1The emergency tire puncture repair kit
(Emergency Tire Sealant) is supplied with
the vehicle instead of a spare tire. It can be
used to temporarily repair minor tire
punctures.
If possible, have the vehicle towed to a
facility that can repair or replace the flat
tire. Using the emergency tire puncture
repair kit may cause a malfunction of the
tire pressure sensor and cause the low tire
pressure warning light to illuminate.

WHEELS AND TIRESGUID-BF695FB1-A128-40E0-83FB-F9B7F1F736C8
Road wheelGUID-C244147F-9E0A-4B2A-B0ED-6562EFEE778DTypeSize Offset in (mm)
Aluminum Front:
Rear:
18
68J
18 68-1/2J 1.69 (43)
1.06 (27)
Front:
Rear: 19
68-1/2J
19 69J 1.69 (43)
1.18 (30)
Spare* 1864T 0 (0)
TireGUID-223AC930-7942-4B14-8716-9ED2E1C87E08TypeSize Pressure PSI (kPa) [Cold]
Conventional Front:
Rear:
P225/50R18 94V
P245/45R18 96V
38 (260)
Front:
Rear: 225/45R19 96W XL
245/40R19 98W XL
39 (270)
Spare (T-type)* T145/70R18 107M 60 (420)
*: if so equipped.
Technical and consumer information9-9

10-6
S
SafetyChild seat belts ...
........................................... 1-17
Satellite radio operation ...
................................... 4-54
Seat adjustment
Front power seat adjustment ...
.......................... 1-3
Front seats ...
..................................................... 1-3
Seat belt(s)
Child safety ...
................................................. 1-17
Infants ...
......................................................... 1-18
Injured persons ...
........................................... 1-13
Larger children ...
............................................. 1-18
Precautions on seat belt usage ...
.................... 1-11
Pre-crash seat belts ...
..................................... 1-13
Pregnant women ...
.......................................... 1-13
Seat belt cleaning ...
.......................................... 7-6
Seat belt extenders ...
...................................... 1-16
Seat belt guide ...
............................................ 1-16
Seat belt maintenance ...
................................. 1-17
Seat belt warning light ...
................................ 2-14
Seat belts ...
.................................................... 1-11
Seat belts with pretensioners ...
...................... 1-47
Small children ...
............................................. 1-18
Three-point type ...
.......................................... 1-13
Seat synchronization function ...
........................... 3-38
Seat(s) Climate controlled seats ...
.............................. 2-40
Driver-side memory ...
...................................... 3-38
Heated seats ...
............................................... 2-39
Seats ...
............................................................. 1-2 Security system (INFINITI Vehicle Immobilizer
System), Engine start
...
........................................ 2-29
Security system, Vehicle security system ...
.......... 2-27
Selector lever
Shift lock release ...
......................................... 5-17
Separator, Retractable hard top ...
........................ 3-21
Servicing climate control ...
................................... 4-39
SETTING button ...
................................................. 4-13
Shift lock release, Transmission ...
........................ 5-17
Shift “P”warning (Automatic
Transmission models) ...
....................................... 2-19
Shifting Automatic transmission ...
............................... 5-13
Manual transmission ...
................................... 5-18
Sliding front passenger’s seat ...
............................. 1-5
Sonar system ...
.................................................... 5-47
Sonar system off switch ...
.................................... 5-49
Spare tire ...
........................................................... 9-9
Spark plugs ...
...................................................... 8-18
Speedometer ...
...................................................... 2-7
Starting Before starting the engine ...
........................... 5-12
Jump starting ...
............................................... 6-13
Precautions when starting and driving ...
........... 5-3
Push starting ...
............................................... 6-15
Starting the engine ...
...................................... 5-12
STATUS button ...
.................................................... 4-9
Status light, Front passenger air bag ...
................ 1-42
Steering Power steering fluid ...
..................................... 8-13
Power steering system ...
................................. 5-49 Steering-wheel-mounted controls
for audio
...
...................................................... 4-81
Tilt/telescopic steering ...
................................. 3-34
Storage ...
............................................................. 2-44
Storage box ...
...................................................... 2-47
Sun visors ...
........................................................ 3-35
Supplemental air bag warning labels ...
................ 1-48
Supplemental air bag warning light ...
......... 1-48, 2-14
Supplemental restraint system ...
.......................... 1-35
Precautions on supplemental
restraint system ...
........................................... 1-35
Switch Autolight switch ...
........................................... 2-34
Fog light switch ...
........................................... 2-37
Hazard warning flasher switch ...
..................... 2-38
Headlight switch ...
.......................................... 2-34
Ignition switch ...
............................................. 5-13
Ignition switch manual
transmission models ...
.................................... 5-18
Power door lock switch ...
.................................. 3-6
Rear window and outside mirror
defroster switch ...
........................................... 2-33
Retractable hard top switch ...
................ 3-24, 3-26
Turn signal switch ...
........................................ 2-37
Vehicle dynamic control (VDC) off switch ...
...... 2-41
T
Tachometer ...
......................................................... 2-8
Temperature gauge, Engine coolant
temperature gauge ...
.............................................. 2-8

Theft (INFINITI Vehicle Immobilizer
System), Engine start...
........................................ 2-29
Thigh extension ...
.................................................. 1-5
Three-way catalyst ...
.............................................. 5-4
Tilt/telescopic steering ...
...................................... 3-34
Tire Pressure, Low tire pressure warning light ...
.... 2-12
Sealant ...
.......................................................... 6-8
Tire replacement indicator ...
............................ 2-23
Tires
Emergency tire puncture repair kit ...
................. 6-8
Flat tire ...
.......................................................... 6-2
Low tire pressure warning system ...
.................. 5-4
Spare tire ...
.................................................... 8-38
Tire and Loading information label ...
...... 8-30, 9-13
Tire chains ...
................................................... 8-35
Tire dressing ...
.................................................. 7-4
Tire pressure ...
................................................ 8-29
Tire pressure monitoring
system (TPMS) ...
....................................... 5-4, 6-2
Tire rotation ...
................................................. 8-35
Types of tires ...
............................................... 8-34
Uniform tire quality grading ...
......................... 9-21
Wheel/tire size ...
.............................................. 9-9
Wheels and tires ...
.......................................... 8-29
Top, Retractable hard top ...
.................................. 3-19
Touch screen system ...
........................................... 4-5
Towing
Flat towing ...
................................................... 9-20
Tow truck towing ...
.......................................... 6-17
Towing a trailer ...
............................................ 9-20 TPMS, Tire pressure monitoring system
...
.............. 5-4
TPMS, Tire pressure warning system ...
................... 6-2
Trailer towing ...
.................................................... 9-20
Transceiver, HomeLink
®Universal Transceiver ...
... 2-53
Transmission Automatic transmission fluid (ATF) ...
............... 8-12
Driving with automatic transmission ...
............ 5-13
Driving with manual transmission ...
................ 5-18
Transmission selector lever lock release ... ...... 5-17
Transmitter (See remote keyless entry system) ...
... 3-14
Traveling or registering your vehicle in
another country ...
................................................ 9-11
Trip computer ...
................................................... 2-25
Trip odometer ...
................................................... 2-25
Trunk Interior trunk lid release ...
.............................. 3-31
Light ...
............................................................ 2-52
Trunk lid ...
...................................................... 3-29
Trunk lid release switch ...
............................... 3-29
Trunk open request switch ...
........................... 3-29
Trunk release power cancel switch ...
............... 3-30
Turn signal switch ...
............................................. 2-37
U
Underbody cleaning ...
............................................ 7-3
Uniform tire quality grading ...
.............................. 9-21
USB memory operation ...
..................................... 4-61
V
Vanity mirror ...
..................................................... 3-37
Vanity mirror lights ...
........................................... 2-52
Variable voltage control system ...
........................ 8-17
Vehicle
Dimensions ...
.................................................. 9-10
Identification number (VIN) ...
.......................... 9-11
Loading information ...
..................................... 9-17
Recovery (freeing a stuck vehicle) ...
................ 6-19
Security system ...
........................................... 2-27
Vehicle dynamic control (VDC) off switch ...
...... 2-41
Vehicle dynamic control (VDC) system ...
.......... 5-54
Vehicle dynamic control (VDC)
warning light ...
............................................... 2-14
Vehicle information and settings (display) ...
...... 4-9
Ventilators ...
........................................................ 4-29
Voice command (Bluetooth
®Hands-Free
Phone System) ...
................................................ 4-101
Voice command (INFINITI voice
recognition system) ...
............................. 4-116, 4-126
Voice recognition system ...
................................ 4-109
Voice recognition, Alternate command mode ...
... 4-123
Voice recognition, Standard mode ...
................... 4-109
W
Walk-in mechanism ...
............................................. 1-6
Warning Dot matrix display ...
....................................... 2-17
Hazard warning flasher switch ...
..................... 2-38
10-7