2019 TOYOTA GT86 Owners Manual (in English)

473
6-1. Specifications
6
Vehicle specifications
■
Toyota does not recommend gasoline containing MMT
Some gasoline contains octane enhancing additive called MMT (Me thylcy-
clopentadienyl Manganese Tricarbonyl).
Toyota DOES NOT recommend the use of gasoline that contains MMT . If
fuel containing MMT is used, your emission control system may b e
adversely affected.
The malfunction indicator lamp on the instrument cluster may co me on. If
this happens, contact your Toyota dealer for service.
NOTICE
■ Notice on fuel quality
●Do not use improper fuels. If improper fuels are used the engin e will be
damaged.
● Do not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle’s three-way ca talytic
converters causing the emission control system to malfunction.
● Do not use gasohol other than the type previously stated.
Other gasohol may cause fuel system damage or vehicle performan ce
problems.
● Using unleaded gasoline with an octane number or rating lower t han the
level previously stated may cause persistent heavy knocking.
At worst, this may lead to engine damage and will void the vehicle war-
ranty.
■ Fuel-related poor driveability
If after using a different type of fuel, poor driveability is e ncountered (poor
hot starting, vaporization, engine knocking, etc.), discontinue the use of that
type of fuel.
■ When refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle's pa int.

474
6-1. Specifications
Tire infor mation
Typical tire symbols
Standard tire
Compact spare tireTire size ( P. 4 7 7 )
DOT and Tire Identification Number (TIN) ( P. 4 7 6 )
Uniform tire quality grading
For details, see “Uniform Tire Quality Grading” that follows.
Location of treadw ear indicators ( P. 3 4 5 )

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6-1. Specifications
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Vehicle specifications
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the
strands which form the plies in a tire.
Radial tires or bias-ply tires
A radial tire has “RADIAL” on the sidewall. A tire not marked
“RADIAL” is a bias-ply tire.
TUBELESS or TUBE TYPE
A tubeless tire does not have a
tube and air is directly filled in the
tire. A tube type tire has a tube inside the tire and the tube main-
tains the air pressure.
Load limit at maximum cold tire inflation pressure (P. 3 4 8 )
Maximum cold tire inflation pressure ( P. 4 6 8 )
This means the pres sure to which a tire may be inflated.
Summer tire or all season tire ( P. 3 4 8 )
An all season tire has “M+S” on t he sidewall. A tire not marked
“M+S” is a summer tire.
“TEMPORARY USE ONLY” ( P. 4 2 9 )
A compact spare tire is identified by the phrase “TEMPORARY
USE ONLY” molded into its sidewa ll. This tire is designed for tem-
porary emergency use only.

476 6-1. Specifications
Typical DOT and tire identification number (TIN)
Ty p e A 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 B

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6-1. Specifications
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Vehicle specifications
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

478 6-1. Specifications
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 Traffic Safety Administration of the
U.S. Department of Transportation.
It provides the purchasers and/or prospective purchasers of Toyota
vehicles with information on uniform tire quality grading.
Your Toyota 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 shoul der
and maximum se ction width.
For example: Treadwear 200 Traction AA Temperature A

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6-1. Specifications
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Vehicle specifications
■
Treadwear
The treadwear grade is a comparative rating based on the wear
rate of the tire when tested under controlled conditions on a speci-
fied government test course.
For example, a tire graded 150 would wear one and a half (1 - 1 /2)
times as well on the governmen t course as a tire graded 100.
The relative performance of tires depends upon the actual condi tions
of their use. Performance may differ significantly from the nor m due
to variations in driving habits, service practices and differen ces in
road characterist ics and climate.
■Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C ,
and they represent the tire’s ability to stop on wet pavement a s
measured under controlled cond itions on specified government
test surfaces of asphalt and concrete.
A tire marked C may have p oor traction performance.
Warning: The traction grade assigned to this tire is based on b raking
(straight ahead) traction tests and does not include cornering (turn-
ing) traction.
■ Temperature A, B, C
The temperature grades are A (the highest), B, and C, represent -
ing the tire’s resistance to the generation of heat and its abi lity to
dissipate heat when tested under controlled conditions on a speci-
fied indoor laboratory test wheel.
Sustained high temperature can c ause the material of the tire to
degenerate and reduce tire life, and excessive temperature can lead
to sudden tire failure.
Grade C corresponds to a level of performance which all passeng er
car tires must meet under the Fe deral Motor Vehicle Safety Standard
No. 109.
Grades B and A represent higher levels of performance on the la bo-
ratory test wheel than the minimum required by law.

480 6-1. Specifications
Warning: The temperature grades of a tire assume that it is properly
inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either s epa-
rately or in combination, can cause heat buildup and possible t ire fail-
ure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation
pressure Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1
mile or 1.5 km under
that condition
Maximum inflation
pressure The maximum cold inflated pressure to which a
tire may be inflated, shown on the sidewall of
the tire
Recommended
inflation pressure Cold tire inflation pressure recommended by a
manufacturer.
Accessory weight The combined weight (i
n excess of those stan-
dard items which may be replaced) of auto-
matic transmission, po wer steering, power
brakes, power windows, power seats, radio
and heater, to the exten t that these items are
available as factory-installed equipment
(whether installed or not)
Curb weight The weight of a
motor vehicle with standard
equipment, including th e maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded
vehicle weight The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight