width TOYOTA tC 2012 Owners Manual (in English)

224 2-5. Driving information
Scion_tC_U_(OM21041U)
Selecting tire chainsUse the correct tire chain size when mounting the tire chains. Chain
size is regulated for each tire size.
Type A (except P225/45R18 tires)
Side chain:
(0.14 in. [3.5 mm] in diameter)
Cross chain: 
(0.16 in. [4.0 mm] in diameter)
Ty p e B Side chain:
0.12 in. (3.0 mm) in diameter
1.18 in. (30.0 mm) in length
0.39 in. (10.0 mm) in width
Cross chain:
0.16 in. (4.0 mm) in diameter
0.98 in. (25.0 mm) in length
0.55 in. (14.0 mm) in width

324
4-3. Do-it-yourself maintenance
Scion_tC_U_(OM21041U)
Wheels
■When replacing wheels (U.S.A. only)
The wheels of your vehicle are equipped with tire pressure warning
valves and transmitters that allow the tire pressure warning system to
provide advance warning in the event of a loss in tire inflation pressure.
Whenever wheels are replaced, tire pressure warning valves and trans-
mitters must be installed. ( P. 311)
If a wheel is bent, cracked or heavily corroded, it should be
replaced. 
Otherwise, the tire may separate from the wheel or cause a loss
of handling control.
■ Wheel selection
When replacing wheels, care shou ld 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 Scion dealer.
*: Conventionally referred to as “offset”.
Scion does not recommend using the following:
● Wheels of different sizes or types
● Used wheels
● Bent wheels that have been straightened
■ Aluminum wheel precautions
●Use only Scion wheel nuts and wrenches designed for use
with your aluminum 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 aluminum wheels when using
tire chains.
● Use only Scion genuine balance weights or equivalent and
use a plastic or rubber hammer when balancing your wheels.

416
Scion_tC_U_(OM21041U)
6-1. Specifications
Maintenance data (fuel, oil level, etc.)
Dimensions and weight
*: Unladen vehicles
Vehicle identification■ Vehicle identification number
The vehicle identification number (VIN) is the legal identifier for
your vehicle. This is the primar y identification number for your
Scion. It is used in registeri ng the ownership of your vehicle.
This number is stamped under
the passenger seat.
Overall length 174.0 in. (4420 mm)
Overall width70.7 in. (1795 mm)
Overall height*55.7 in. (1415 mm)
Wheelbase106.3 in. (2700 mm)
TreadFront 60.6 in. (1540 mm)
Rear 61.4 in. (1560 mm)
Vehicle capacity weight
(occupants + luggage) 865 lb. (390 kg)

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

434 6-1. Specifications
Scion_tC_U_(OM21041U)
Tire section namesBead
Sidewall
Shoulder
Tread
Belt
Inner liner
Reinforcing rubber
Carcass
Rim lines
Bead wires
Chafer
Uniform Tire Quality GradingThis information has been prepared in accordance with regulations
issued by the National Highway Tr affic Safety Administration of the
U.S. Department of Transportation. 
It provides the purchasers and/or prospective purchasers of Scion
vehicles with information on uniform tire quality grading.
Your Scion dealer will help answer any questions you may have as
you read this information.
■ DOT quality grades
All passenger vehicle tires must conform to Federal Safety
Requirements in addition to these grades. Quality grades can be
found where applicable on the tire sidewall between tread shoulder
and maximum section width.
For example: Treadwear 200 Traction AA Temperature A

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

441
6-1. Specifications
6
Vehicle specifications
Scion_tC_U_(OM21041U)
Tire related termMeaning
Maximum load rating The load rating for a tire at the maximum per-
missible inflation pressure for that tire
Maximum permissible
inflation pressure The maximum cold inflation pressure to which
a tire may be inflated
Measuring rim The rim on which a tire is fitted for physical
dimension requirements
Open splice Any parting at any junction of tread, sidewall, or
innerliner that extends to cord material
Outer diameter The overall diameter of an inflated new tire
Overall width The linear distance between the exteriors of
the sidewalls of an inflated tire, including eleva-
tions due to labeling, decorations, or protective
bands or ribs
Passenger car tire A tire intended for use on passenger cars, mul-
tipurpose passenger vehicles, and trucks, that
have a gross vehicle weight rating (GVWR) of
10,000 lb. or less.
Ply A layer of rubber-coated parallel cords
Ply separation A parting of rubber compound between adja-
cent plies
Pneumatic tire A mechanical device made of rubber, chemi-
cals, fabric and steel or
other materials, that,
when mounted on an automotive wheel, pro-
vides the traction and contains the gas or fluid
that sustains the load

442 6-1. Specifications
Scion_tC_U_(OM21041U)
Tire related termMeaning
Radial ply tire A pneumatic tire in which the ply cords that
extend to the beads are laid at substantially 90
degrees to the centerline of the tread
Reinforced tire A tire designed to operate at higher loads and
at higher inflation pressures than the corre-
sponding standard tire
Section width The linear distance between the exteriors of
the sidewalls of an inflated tire, excluding ele-
vations due to labeling, decoration, or protec-
tive bands
Sidewall That portion of a tire between the tread and
bead
Sidewall separation The parting of the rubber compound from the
cord material in the sidewall
Snow tire A tire that attains a traction index equal to or
greater than 110, compared to the ASTM

E-1136 Standard Reference Test Tire, when
using the snow traction test as described in
ASTM F-1805-00, Standard Test Method for
Single Wheel Driving Traction in a Straight Line
on Snow-and Ice-Covered Surfaces, and which
is marked with an Alpine Symbol ( ) on at
least one sidewall
Te s t r i m The rim on which a tire is fitted for testing, and
may be any rim listed as appropriate for use
with that tire
Tread That portion of a tire that comes into contact
with the road