2018 SUBARU BRZ tire size

386
4-3. Do-it-yourself maintenance
BRZ_U (A4450BE-A)
Wheels
If a wheel is bent, cracked or heavily corroded, it should be
replaced. Otherwise, the tire may separate from the wheel or
cause loss of handling control.
■Wheel selection
When replacing wheels, care should be taken to ensure that
they are equivalent to those removed in load capacity, diameter,
rim width, and inset
*.
Replacement wheels are available at your SUBARU dealer.
*: Conventionally referred to as “offset”.
SUBARU does not recommend using:
● Wheels of different sizes or types
● Used wheels
● Bent wheels that have been straightened
■ Alloy wheel precautions
● Use only SUBARU wheel nuts and wrenches designed for
use with your alloy wheels.
● When rotating, repairing or changing your tires, check that the
wheel nuts are still tight after driving 1000 miles (1600 km).
● Be careful not to damage the alloy wheels when using tire
chains.
● Use only SUBARU genuine balance weights or equivalent
and a plastic or rubber hammer when balancing your wheels.

387
4-3. Do-it-yourself maintenance
4
Maintenance and care
BRZ_U (A4450BE-A)
■When replacing wheels (vehicles with a tire pressure monitoring
system)
The wheels of your SUBARU are equipped with tire pressure warning
valves and transmitters that allow the tire pressure monitoring system to
provide advanced warning in the event of a loss in tire inflation pressure.
Whenever wheels are replaced, the tire pressure warning valves and
transmitters must be installed. (
→P. 375)
WARNING
■When replacing wheels
●Do not use wheels that are a different size from those recommended in
the Owner’s Manual, as this may result in loss of handling control.
●Never use an inner tube in a leaking wheel which is designed for a
tubeless tire. Doing so may result in an accident, causing death or seri-
ous injury.
■When installing the wheel nuts
●Never use oil or grease on the wheel bolts or wheel nuts.
Oil and grease may cause the wheel nuts to be excessively tightened,
leading to bolt or disc wheel damage. In addition, the oil or grease can
cause the wheel nuts to loosen and the wheel may fall off, causing an
accident and resulting in death or serious injury. Remove any oil or
grease from the wheel bolts or wheel nuts.
●Be sure to install the wheel nuts with
the tapered ends facing inward.
Installing the nuts with the tapered
ends facing outward can cause the
wheel to break and eventually cause
the wheel to come off while driving,
which could lead to an accident
resulting in death or serious injury.
Tapered portion

438 5-2. Steps to take in an emergency
BRZ_U (A4450BE-A)
WARNING
■Maintenance of the tires (vehicles with a tire pressure monitoring
system)
Each tire, including the spare (if provided), should be checked monthly
when cold and inflated to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or tire inflation pressure
label (tire and load information label). (If your vehicle has tires of a differ-
ent size than the size indicated on the vehicle placard or tire inflation
pressure label [tire and load information label], you should determine the
proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has been equipped with a tire
pressure monitoring system (TPMS) that illuminates a low tire pressure
telltale (tire pressure warning light) when one or more of your tires is sig-
nificantly under-inflated. Accordingly, when the low tire pressure telltale
(tire pressure warning light) illuminates, you should stop and check your
tires as soon as possible, and inflate them to the proper pressure. Driv-
ing on a significantly under-inflated tire causes the tire to overheat and
can lead to tire failure. Under-inflation also reduces fuel efficiency and
tire tread life, and may affect the vehicle's handling and stopping ability.
Please note that the TPMS is not a substitute for proper tire mainte-
nance, and it is the driver's responsibility to maintain correct tire pres-
sure, even if under-inflation has not reached the level to trigger
illumination of the TPMS low tire pressure telltale (tire pressure warning
light).
Your vehicle has also been equipped with a TPMS malfunction indicator
to indicate when the system is not operating properly. The TPMS mal-
function indicator is combined with the low tire pressure telltale (tire pres-
sure warning light). When the system detects a malfunction, the telltale
will flash for approximately one minute and then remain continuously illu-
minated. This sequence will continue upon subsequent vehicle start-ups
as long as the malfunction exists. When the malfunction indicator is illu-
minated, the system may not be able to detect or signal low tire pressure
as intended.

502 6-1. Specifications
BRZ_U (A4450BE-A)
Steering
Tires and wheels (for vehicles sold in the U.S.A. and Canada)Ty p e A
Ty p e B
Free play Less than 1.2 in. (30 mm)
Tire size 215/45R17 87W, T135/80D16 101M
Tire inflation pressure
(Recommended cold tire
inflation pressure) Front
35 psi (240 kPa, 2.4 kgf/cm2 or bar)
Rear 35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Spare 60 psi (420 kPa, 4.2 kgf/cm
2 or bar)
Wheel size 17 × 7 J, 16 × 4T (spare)
Wheel nut torque 89 ft•lbf (120 N•m, 12.2 kgf•m)
Tire size 215/45R17 87W, T145/70D17 106M
Tire inflation pressure
(Recommended cold tire
inflation pressure)Front
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Rear 35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Spare 60 psi (420 kPa, 4.2 kgf/cm
2 or bar)
Wheel size 17 × 7 1/2 J, 17 × 4T (spare)
Wheel nut torque 89 ft•lbf (120 N•m, 12.2 kgf•m)

503
6-1. Specifications
6
Vehicle specifications
BRZ_U (A4450BE-A)
Ty p e C
Tires and wheels (for vehicles sold in Mexico)
Tire size 215/40R18 85Y, T145/70D17 106M
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Front
35 psi (240 kPa, 2.4 kgf/cm2 or bar)
Rear 35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Spa re 60 psi (420 kPa, 4.2 kgf/cm
2 or bar)
Wheel size 18 × 7 1/2 J, 17 × 4T (spare)
Wheel nut torque 89 ft•lbf (120 N•m, 12.2 kgf•m)
Tire size 215/45R17 87W
Tire inflation pressure
(Recommended cold tire
inflation pressure) Front
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Rear 35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Spa re 35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Wheel size 17 × 7 J
Wheel nut torque 89 ft•lbf (120 N•m, 12.2 kgf•m)

509
6-1. Specifications
6
Vehicle specifications
BRZ_U (A4450BE-A)
Tire information
Typical tire symbols
Standard tire
Compact spare tireTire size ( →P. 512)
DOT and Tire Identification Number (TIN) ( →P. 5 1 1 )
Uniform tire quality grading
For details, see “Uniform Tire Quality Grading” that follows.
Location of treadwear indicators ( →P. 374)

511
6-1. Specifications
6
Vehicle specifications
BRZ_U (A4450BE-A)
Typical DOT and tire identification number (TIN)
DOT symbol
*
Tire Identification Number
(TIN)
Tire manufacturer's identifica-
tion mark
Tire size code
Manufacturer's optional tire
type code (3 or 4 letters)
Manufacturing week
Manufacturing year
Manufacturer's code
*: The DOT symbol certifiesthat the tire conforms to
applicable Federal Motor
Vehicle Safety Standards.
Ty p e A
Ty p e B

512 6-1. Specifications
BRZ_U (A4450BE-A)
Tire size■ Typical tire size information
The illustration indicates typical
tire size.
Tire use
(P = Passenger car,
T = Temporary use)
Section width (millimeters)
Aspect ratio
(tire height to section width)
Tire construction code
(R = Radial, D = Diagonal)
Wheel diameter (inches)
Load index (2 or 3 digits)
Speed symbol
(alphabet with one letter)
■ Tire dimensions
Section width
Tire height
Wheel diameter