tire size NISSAN 370Z ROADSTER 2014 Z34 User Guide

8-32Maintenance and do-it-yourself
SDI1949
Checking the tire pressure
1. Remove the valve stem cap from thetire.
2. Press the pressure gauge squarely onto the valve stem. Do not press too hard or
force the valve stem sideways, or air will
escape. If the hissing sound of air
escaping from the tire is heard while
checking the pressure, reposition the
gauge to eliminate this leakage.
3. Remove the gauge.
4. Read the tire pressure on the gauge stem and compare it to the specifica- tion shown on the Tire and Loading
Information label.
5. Add air to the tire as needed. If too much air is added, press the core of the
valve stem briefly with the tip of the
gauge stem to release pressure. Re-
check the pressure and add or release
air as needed.
6. Install the valve stem cap.
7. Check the pressure of all other tires, including the spare.
Coupe models (except for NISMO models):
SIZE COLD TIRE
INFLATION PRES-
SURE
FRONT
ORIGINAL TIRE 225/50R18
95W
240 kPa,
35 PSI
245/40R19
94W 240 kPa,
35 PSI
REAR ORI- GINALTIRE 245/45R18
96W
240 kPa,
35 PSI
275/35R19
96W 240 kPa,
35 PSI
SPARE TIRE T145/80-
D17 107M
420 kPa,
60 PSI
T145/70-
R18 107M 420 kPa,
60 PSI

Roadster models (except for NISMO mod-
els):
SIZECOLD TIRE
INFLATION
PRES-SURE
FRONT
ORIGINAL TIRE 225/50R18
95W
260 kPa,
38 PSI
245/40R19
94W 240 kPa,
35 PSI
REAR ORI- GINAL
TIRE 245/45R18
96W
260 kPa,
38 PSI
275/35R19
96W 240 kPa,
35 PSI
SPARE TIRE T145/80-
D17 107M
420 kPa,
60 PSI
T145/70-
R18 107M 420 kPa,
60 PSI
NISMO models:
SIZECOLD TIRE
INFLATION PRES-
SURE
FRONT
ORIGINAL TIRE 245/40R19
98Y
240 kPa,
35 PSI
REAR ORI- GINAL
TIRE 285/35R19
99Y
240 kPa,
35 PSI
SPARE TIRE T145/70-
R18 420 kPa,
60 PSI
SDI1575Example
TIRE LABELING
Federal law requires tire manufacturers to
place standardized information on the side-
wall of all tires. This information identifies
and describes the fundamental character-
istics of the tire and also provides the tire
identification number (TIN) for safety stan-
dard certification. The TIN can be used to
identify the tire in case of a recall.
Maintenance and do-it-yourself8-33

8-34Maintenance and do-it-yourself
SDI1606Example*1Tire size (example: P215/60R16 94H)
1. P: The “P” indicates the tire is designed for passenger vehicles. (Not all tires
have this information.)
2. Three-digit number (215): This number gives the width in millimeters of the tire
from sidewall edge to sidewall edge.
3. Two-digit number (60): This number, known as the aspect ratio, gives the
tire’s ratio of height to width.
4. R: The “R” stands for radial.
5. Two-digit number (16): This number is the wheel or rim diameter in inches. 6. Two- or three-digit number (94): This
number is the tire’s load index. It is a
measurement of how much weight each
tire can support. You may not find this
information on all tires because it is not
required by law.
7. H: Tire speed rating. You should not drive the vehicle faster than the tire
speed rating.
SDI1607Example*2TIN (Tire Identification Number) for a
new tire (example: DOT XX XX XXX
XXXX)
1. DOT: Abbreviation for the “Department of Transportation”. The symbol can be
placed above, below or to the left or
right of the Tire Identification Number.
2. Two-digit code: Manufacturer’s identifi- cation mark
3. Two-digit code: Tire size
4. Three-digit code: Tire type code (Op- tional)

5. Three-digit code: Date of Manufacture
6. Four numbers represent the week andyear the tire was built. For example, the
numbers 3103 means the 31st week of
2003. If these numbers are missing,
then look on the other sidewall of the
tire.
*3Tire ply composition and material
The number of layers or plies of
rubber-coated fabric in the tire.
Tire manufacturers also must indicate
the materials in the tire, which include
steel, nylon, polyester, and others.
*4Maximum permissible inflation pres-
sure
This number is the greatest amount of
air pressure that should be put in the
tire. Do not exceed the maximum
permissible inflation pressure.
*5Maximum load rating
This number indicates the maximum
load in kilograms and pounds that can
be carried by the tire. When replacing
the tires on the vehicle, always use a
tire that has the same load rating as
the factory installed tire.
*6Term of “tubeless” or “tube type”
Indicates whether the tire requires an
inner tube (“tube type”) or not (“tube-
less”) .
*7The word “radial”
The word “radial” is shown, if the tire
has radial structure.
*8Manufacturer or brand name
Manufacturer or brand name is shown.
Other tire-related terminology:
In addition to the many terms that are
defined throughout this section, Intended
Outboard Sidewall is (1) the sidewall that
contains a whitewall, bears white lettering
or bears manufacturer, brand and/or model
name molding that is higher or deeper than
the same molding on the other sidewall of
the tire, or (2) the outward facing sidewall
of an asymmetrical tire that has a particular
side that must always face outward when
mounted on a vehicle.
TYPES OF TIRES
WARNING
. When changing or replacing tires,
be sure all four tires are of the same
type (Example: Summer, All Season
or Snow) and construction. A
NISSAN dealer may be able to help
you with information about tire type,
size, speed rating and availability.
. Replacement tires may have a lower
speed rating than the factory
equipped tires, and may not match
the potential maximum vehicle
speed. Never exceed the maximum
speed rating of the tire.
. Replacing tires with those not ori-
ginally specified by NISSAN could
affect the proper operation of the
TPMS.
. For additional information regard-
ing tires, refer to “Important Tire
Safety Information” (US) or “Tire
Safety Information” (Canada) in the
Warranty Information Booklet.
Maintenance and do-it-yourself8-35

8-36Maintenance and do-it-yourself
All season tires
NISSAN specifies all season tires on some
models to provide good performance all year,
including snowy and icy road conditions. All
Season tires are identified by ALL SEASON
and/or M&S (Mud and Snow) on the tire
sidewall. Snow tires have better snow traction
than All Season tires and may be more appro-
priate in some areas.
Summer tires
NISSAN specifies summer tires on some
models to provide superior performance on dry
roads. Summer tire performance is substantially
reduced in snow and ice. Summer tires do not
have the tire traction rating M&S on the tire
sidewall.
If you plan to operate your vehicle in snowy or
icy conditions, NISSAN recommends the use of
SNOW tires or ALL SEASON tires on all four
wheels.
Snow tires
If 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 notmatch the potential maximum vehicle speed.
Never exceed the maximum speed rating of the
tire.
If you install snow tires, they must be the same
brand, construction and tread pattern on all four
wheels, and the same sizes as the original tires.
For additional traction on icy roads, studded
tires may be used. However, some U.S. states
and Canadian provinces prohibit their use.
Check local, state and provincial laws before
installing studded tires. Skid and traction cap-
abilities of studded snow tires, on wet or dry
surfaces, may be poorer than that of non-
studded snow tires.
TIRE CHAINS
CAUTION
Tire chains/cables should not be in-
stalled on 19-inch size tires. Doing so
will cause damage to the vehicle. If you
plan to use tire chains/cables, you
should install 18-inch size tires on your
vehicle.
Use of tire chains may be prohibited according
to location. Check the local laws before instal-
ling tire chains. When installing tire chains, make sure they are the proper size for the tires on your
vehicle and are installed according to the chain
manufacturer’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 accommodate 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 re-
commended 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
affected.
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 TIRES
Tire rotation
Tires 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.
WARNING
.Retighten the wheel nuts when
the vehicle has been driven for
600 miles (1,000 km) (also in
cases of a flat tire, etc.) .
. For additional information re-
garding tires, refer to “Important
Tire Safety Information” (US) or “Tire Safety Information” (Cana-
da) in the Warranty Information
Booklet.
SDI1663
Tire wear and damage1.Wear indicator2.Wear indicator location mark
WARNING
.
Tires should be periodically in-
spected for wear, cracking, bul-
ging or objects caught in the
tread. If excessive wear, cracks,
bulging or deep cuts are found,
the tire(s) should be replaced.
Maintenance and do-it-yourself8-37

8-38Maintenance and do-it-yourself
.The original tires have built-in
tread wear indicators. When
wear indicators are visible, the
tire(s) should be replaced.
. Tires degrade with age and use.
Have tires, including the spare,
over 6 years old checked by a
qualified technician, because
some tire damage may not be
obvious. Replace the tires as
necessary to prevent tire failure
and possible personal injury.
. Improper service of the spare
tire may result in serious perso-
nal injury. If it is necessary to
repair the spare tire, contact a
NISSAN dealer.
. For additional information re-
garding tires, refer to “Important
Tire Safety Information” (US) or
“Tire Safety Information” (Cana-
da) in the Warranty Information
Booklet.Replacing wheels and tires
When replacing a tire, use the same size, tread
design, speed rating and load carrying 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, construc-
tion (bias, bias-belted or radial) , or
tread patterns can adversely affect
the ride, braking, handling, ground
clearance, body-to-tire clearance,
tire chain clearance, speedometer
calibration, headlight aim and bum-
per height. Some of these effects
may lead to accidents and could
result in serious personal injury.
. If your vehicle was originally
equipped with 4 tires that were the
same size and you are only repla-
cing 2 of the 4 tires, install the new
tires on the rear axle. Placing new
tires on the front axle may cause
loss of vehicle control in some
driving conditions and cause an accident and personal injury.
. If the wheels are changed for any
reason, always replace with wheels
which have the same off-set dimen-
sion. Wheels of a different off-set
could cause premature tire wear,
degrade vehicle handling character-
istics and/or interference with the
brake discs/drums. Such interfer-
ence can lead to decreased braking
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 approxi-
mately 1 minute. The light will
remain on after 1 minute. Contact
your NISSAN dealer as soon as
possible for tire replacement and/
or system resetting.
. Replacing tires with those not ori-
ginally specified by NISSAN could
affect the proper operation of the
TPMS.
. Do not install a deformed wheel or
tire even if it has been repaired.

Such wheels or tires could have
structural damage and could fail
without warning.
. The use of retread tire is not re-
commended.
. For additional information regard-
ing tires, refer to “Important Tire
Safety Information” (US) or “Tire
Safety Information” (Canada) in the
Warranty Information Booklet.
Wheel balance
Unbalanced wheels may affect vehicle handling
and tire life. Even with regular use, wheels can
get out of balance. Therefore, 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
NISSAN Warranty Information Booklet.
Care of wheels
See “Cleaning exterior” (P.7-2) for details about
care of the wheels.
Spare tire (TEMPORARY USE ONLY (T-
type) spare tire) (if so equipped)
Observe 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 possi-
ble tire or differential damage.
. Drive carefully while the TEMPOR-
ARY USE ONLY spare tire is in-
stalled. Avoid sharp turns and
abrupt braking while driving.
. Periodically check spare tire infla-
tion 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
pressure for standard tires, as in- dicated on the Tire and Loading
Information label. For Tire and
Loading Information label location,
see “Tire and Loading Information
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.
Maintenance and do-it-yourself8-39

WHEELS AND TIRES
Road wheel
TypeSize Offset in (mm)
Conventional Front: 18
68J
Rear: 18 69J 1.69 (43)
0.59 (15)
Front: 19 69J
Rear: 19 610J 1.85 (47)
1.18 (30)
NISMO models Front: 1969.5J
Rear: 19 610.5J 1.57 (40)
0.90 (23)
Spare 17
64T*1
18 64T*1 1.18 (30)
0 (0)
*1: if so equipped
Technical and consumer information9-9

9-10Technical and consumer information
Tire
TypeSize Pressure PSI (kPa) [Cold]
Conventional Front: 225/50R18 95W
Rear: 245/45R18 96W
35 (240)*2
38 (260)*3
Front: 245/40R19 94W
Rear: 275/35R19 96W 35 (240)
NISMO models Front: 245/40R19
Rear: 285/35R19 35 (240)
Spare (T-type) T145/80D17 107M*1
T145/70R18 107M*1
60 (420)
—*3, *4
*1: if so equipped
*2: Coupe models
*3: Roadster models
*4: The emergency tire puncture repair kit is supplied.
DIMENSIONS
in (mm)
Overall length 167.6 (4,255)*1 167.7 (4,260)*2
173.4 (4,405)*1, *3
173.5 (4,407)*2, *3
Overall width 72.6 (1,845)
Overall height 51.8 (1,315) 52.2 (1,325)*4
Front tread 61.0 (1,550)*5
60.6 (1,540)*6
61.2 (1,555)*6, *3
Rear tread 62.8 (1,595)*5
61.6 (1,565)*6
62.2 (1,580)*6, *3
Wheelbase 100.4 (2,550)
*1: Without front license plate bracket
*2: With front license plate bracket
*3: NISMO models
*4: Roadster models
*5: 18-inch wheel models
*6: 19-inch wheel models