tire size TOYOTA tC 2012 (in English) User Guide

325
4-3. Do-it-yourself maintenance
4
Maintenance and care
Scion_tC_U_(OM21041U)
CAUTION
■When replacing wheels
●Do not use wheels that are a different size from those recommended in
the Owner’s Manual, as this may resu
lt in a 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.
NOTICE
■Replacing tire pressure warning valves and transmitters (U.S.A.
only)
●Because tire repair or replacement may affect the tire pressure warn-
ing valves and transmitte rs, make sure to have tires serviced by your
Scion dealer or other qualified servic e shop. In addition, make sure to
purchase your tire pressure warning valves and transmitters at your
Scion dealer.
●Ensure that only genuine Scion wheels are used on your vehicle. 
Tire pressure warning valves and transmitters may not work properly
with non-genuine wheels.
●Be sure to install the wheel nuts with
the tapered end faci ng inward. Install-
ing the nuts with the tapered end fac-
ing outward can cause wheel to
break and eventually cause a wheel
to come off while driving, which could
lead to an accident resulting in death
or serious injury.Tapered 
portion

378 5-2. Steps to take in an emergency
Scion_tC_U_(OM21041U)
CAUTION
■Maintenance of the tires (U.S.A. only)
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 th e vehicle placard or tire inflation
pressure label [tire and load informa tion label], you should determine the
proper tire inflation pr essure for those tires.)
As an added safety feature, your v ehicle has been equipped with a tire
pressure monitoring system (TPMS-tire pressure warning system) that
illuminates a low tire pressure telltal e (tire pressure warning light) when
one or more of your tires is significantly under-inflated. Accordingly,
when the low tire pressu re telltale (tire pressure warning light) illumi-
nates, you should stop and check your tires as soon as possible, and
inflate them to the proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel effi ciency and tire tread life, and may
affect the vehicle’s handling and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a sub-
stitute for proper tire main tenance, and it is the driver’s responsibility to
maintain correct tire pressure, even if under-inflation has not reached the
level to trigger illu mination of the TPMS low ti re pressure telltale (tire
pressure warning light).

425
6-1. Specifications
6
Vehicle specifications
Scion_tC_U_(OM21041U)
Tires and wheels
17-inch tires
18-inch tires
Tire size P215/50R17 90W,

T145/80D16 105M (spare)
Front and rear tire inflation
pressure
(Recommended cold tire
inflation pressure) Front:
33 psi (230 kPa, 2.3 kgf/cm2 or bar)
Rear:
30 psi (210 kPa, 2.1 kgf/cm
2 or bar)
Spare:
60 psi (420 kPa, 4.2 kgf/cm
2 or bar)
Wheel size 17  7J, 16  4T (spare)
Wheel nut torque 76 ft•lbf (103 N•m, 10.5 kgf•m)
Tire size P225/45R18 91W,

T145/80D16 105M (spare)
Front and rear tire inflation
pressure
(Recommended cold tire
inflation pressure) Front:
33 psi (230 kPa, 2.3 kgf/cm2 or bar)
Rear:
30 psi (210 kPa, 2.1 kgf/cm
2 or bar)
Spare:
60 psi (420 kPa, 4.2 kgf/cm
2 or bar)
Wheel size 18  7 1/2J, 16  4T (spare)
Wheel nut torque 76 ft•lbf (103 N•m, 10.5 kgf•m)

430
6-1. Specifications
Scion_tC_U_(OM21041U)
Tire infor mation
Typical tire symbols
Full-size tire
Compact spare tireTire size ( P. 433)
DOT and Tire Identification Number (TIN) ( P. 432)
Location of treadwear indicators ( P. 310)

432 6-1. Specifications
Scion_tC_U_(OM21041U)
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
*: The DOT symbol certifies that the tire conforms to applicable
Federal Motor Vehicle Safety
Standards.

433
6-1. Specifications
6
Vehicle specifications
Scion_tC_U_(OM21041U)
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

438 6-1. Specifications
Scion_tC_U_(OM21041U)
Tire related termMeaning
Maximum loaded 
vehicle weight The sum of:

(a) Curb weight 
(b) Accessory weight 
(c) Vehicle capacity weight 
(d) Production options weight
Normal occupant
weight 150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
* that
follows
Occupant distribution Distribution of occupants in a vehicle as speci-
fied in the third column of Table 1
* below
Production options
weight The combined weight of installed regular pro-
duction options weighing over 5 lb. (2.3 kg) in
excess of the standard items which they
replace, not previously considered in curb
weight or accessory weight, including heavy
duty brakes, ride levelers, roof rack, heavy duty
battery, and special trim
Rim A metal support for a tire or a tire and tube
assembly upon which the tire beads are seated
Rim diameter 
(Wheel diameter) Nominal diameter of the bead seat
Rim size designation Rim diameter and width
Rim type designation The industry manufacturer’s designation for a
rim by style or code
Rim width Nominal distance between rim flanges

448
Scion_tC_U_(OM21041U)
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Maintenance data 
(U.S.A. only) After the maintenance is performed. P. 278
Tire pressure warning
system 
(U.S.A. only) When changing the tire size P. 311
The following items must be initialized for normal system operation
in cases such as after maintenance is performed on the vehicle.

471
Alphabetical index
Scion_tC_U_(OM21041U)
Tachometer .............................. 188
Tail lights
Replacing light bulbs ............ 341
Switch ................................... 197
Wattage ................................ 426
Theft deterrent system
Engine immobilizer system... 100
Theft prevention labels ........... 103
Tire inflation pressure ............ 320
Tire information Glossary ............................... 437
Size ...................................... 433
Tire identification number ..... 432
Uniform tire quality 
grading ............................... 434
Tires Chains .................................. 222
Checking .............................. 310
If you have a flat tire ............. 380
Inflation pressure .................. 320
Inflation pressure sensor ...... 311
Information ........................... 430
Replacing ............................. 380
Rotating tires ........................ 310
Size ...................................... 425
Snow tires............................. 222
Spare tire .............................. 380
Tire pressure warning 
system................................ 310
Tools......................................... 380
Total load capacity .................. 221
Towing Dinghy towing ............... 229, 230
Emergency towing ................ 354
Trailer towing ........................ 228
TRAC ........................................ 211
Traction control ....................... 211
Trailer towing........................... 228
Trip meter................................. 188
Turn signal lights Replacing light bulbs ............ 341
Switch ................................... 185
Wattage ................................ 426 Valet key .....................................28
Vanity mirrors...........................257
Vehicle data recording ..............22
Vehicle identification

number ...................................416
Vehicle stability control...........211
VSC............................................211
Warning buzzers
Brake system ........................363
Open door .............................367
Seat belt reminder .................367
Warning lights Anti-lock brake system ..........365
Automatic transmission fluid 
temperature ........................366
Brake assist system ..............365
Brake system ........................363
Charging system .... ...............364
Electric power steering system 
warning light........................366
Electronic engine control 
system ................................365
High coolant temperature ......367
Low engine oil pressure ........364
Low fuel level ........................367
Low tire pressure...................369
Low washer fluid ...................367
Malfunction indicator lamp ....365
Open door .............................367
Pretensioners ........................365
Seat belt reminder light .........367
Smart key system... ...............370
SRS airbags ..........................365
Tire pressure warning light ....369
Washer
Checking ...............................308
Preparing and checking 
before winter .......................222
Switch....................................201
Washing and waxing ...............270TV
W