2019 TOYOTA TUNDRA Owners Manual (in English)

6099-1. Specifications
9
Vehicle specifications
Fuel information
■Identifying flex-fuel vehicles
Gasoline engine ( P. 600)
You must only use unleaded gasoline.
Select octane rating 87 (Research Octane Number 91) or higher.
Use of unleaded gasoline with an octane rating lower than 87
may result in engine knocking. Persistent knocking can lead to
engine damage.
At minimum, the gasoline you use should meet the specifications of
ASTM D4814 in the U.S.A.
Flex-fuel engine ( P. 600)
You must only use unleaded gasoli ne, E85, or a blend of the two
fuels.
Unleaded gasoline (Octane rating 87 [Research Octane Number
91] or higher), E85, or a blend of two fuels is required for op ti-
mum engine performance.
The use of unleaded gasoline with an octane rating lower than
87 may result in engine knocking. Persistent knocking can lead
to engine damage.
The use of fuel with an ethanol concentration in excess of 85%
will have a negative impact on driving performance and can
cause damage to the fuel system components.
At minimum, the gasoline you use should meet the specifications of
ASTM D4814 in the U.S.A.
At minimum, the E85 you use should meet the specifications of
ASTM D5798 in the U.S.A.
Flex-fuel vehicles can be identified by the
fuel tank cap, which is marked “FLEX-
FUEL E85/GASOLINE”.

6109-1. Specifications
■Gasoline quality
In very few cases, driveability problems may be caused by the b rand of gaso-
line you are using. If driveability problems persist, try changing the brand of
gasoline. If this does not correct the problem, consult your To yota dealer.
■ E85 fuel (Flex-fuel vehicles)
●E85 fuel is a blend of 85% ethanol and 15% gasoline. However, E 85 does
not necessarily contain 85% ethanol. For example, in cold clima tes the etha-
nol content of E85 may be reduced during the winter months to m aintain
cold weather starting performance.
● E85 has less energy per gallon than gasoline, so you will need to fill your
fuel tank more frequently when using E85.
● The number of fuel stations that sell E85 fuel is limited. For more information
about fueling stations, please refer to the U.S. Department of Energy Web
site.
http://www.afdc.energy.gov/afdc/locator/stations/
■ Recommendation of the use of gaso line containing detergent additives
● Toyota recommends the use of gasoline that contains detergent a dditives to
avoid build-up of engine deposits.
● All gasoline sold in the U.S.A. contains minimum detergent addi tives to
clean and/or keep clean intake systems, per EPA’s lowest additi ves concen-
tration program.
● Toyota strongly recommends the use of Top Tier Detergent Gasoli ne. For
more information on Top Tier Detergent Gasoline and a list of m arketers,
please go to the official website www.toptiergas.com.
■ Recommendation of the use of low emissions gasoline
Gasolines containing oxygenates such as ethers and ethanol, as well as
reformulated gasolines, are available in some cities. These fue ls are typically
acceptable for use, providing they meet other fuel requirements .
Toyota recommends these fuels, since the formulations allow for reduced
vehicle emissions.

6119-1. Specifications
9
Vehicle specifications
■Non-recommendation of the use of blended gasoline (gasoline engine)
● If you use gasohol in your vehicle, be sure that it has an octa ne rating no
lower than 87.
● Toyota does not recommend the use of gasoline containing methan ol.
■ Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhancing additive called MMT (Methylcy-
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 be adv ersely
affected.
The malfunction indicator lamp on the instrument cluster may come on. If this
happens, contact your Toyota dealer for service.
■ Non-recommendation of the use of after-market fuel additives (Flex-fuel
vehicles)
Do not use any after-market fuel additives when repeatedly refu eling with
E85, as some after-market fuel additives are not compatible wit h E85.
■ If your engine knocks
●Consult your Toyota dealer.
● You may occasionally notice light knocking for a short time whi le accelerat-
ing or driving uphill. This is normal and there is no need for concern.
●
Use only gasoline containing up to 15%
ethanol.
DO NOT use any flex-fuel or gasoline
that could contain more than 15% etha-
nol, including from any pump labeled
E30, E50, E85 (which are only some
examples of fuel containing more than
15% ethanol).
DO NOT use gasoline contain-
ing more than 15% ethanol.
(30% ethanol)
(50% ethanol)
(85% ethanol)

6129-1. Specifications
NOTICE
■Notice on fuel quality
● Do not use improper fuels. If improper fuels are used, the engi ne 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.
● Gasoline engine: Do not use gasohol other than the type previou sly
stated.
Other gasohol may cause fuel system damage or vehicle performan ce
problems.
● Using unleaded gasoline with an octane number or rating lower than the
level previously stated will cause persistent heavy knocking.
At worst, this will lead to engine damage.
■ When use of non-specified fuels (Flex-fuel engine)
The use of non-specified fuels will have a negative impact on s tarting and
driving performance, and will cause damage to the fuel system c ompo-
nents. Therefore, do not add fuels such as the following.
● Fuels containing methanol
● Fuels with more than 85% ethanol
■ Fuel-related poor driveability
If poor driveability (poor hot starting, vaporization, engine k nocking, etc.) is
encountered after using a different type of fuel, discontinue the use of that
type of fuel.
■ When refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle’s paint.

6139-1. Specifications
9
Vehicle specifications
Tire information
Tire size ( P. 614)
DOT and Tire Identification Number (TIN) ( P. 614)
Location of treadwear indicators ( P. 495)
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands
which form the p lies in a tire.
Uniform tire quality grading
For details, see “Uniform Tire Q uality Grading” that follows.
Load limit at maximum cold tire inflation pressure ( P. 618)
Maximum cold tire inflation pressure ( P. 618)
This means the press ure to which a tire may be inflated.
TUBELESS or TUBE TYPE
A tubeless tire does not have a tube and air is directly put into the tire.
A tube type tire has a tube insi de the tire and the tube mainta ins the air
pressure.
Radial tires or bias-ply tires
A radial tire has “RADIAL” on the sidewall. A tire not marked “ RADIAL”
is a bias-ply tire.
Summer tire or all season tire ( P. 500)
An all season tire has “M+S” on the sidewall. A tire not marked “M+S”
is a summer tire.
Typical tire symbols
1
2
3
4
5
6
7
8
9
10

6149-1. Specifications
DOT symbol*
Tire Identification Number (TIN)
Tire manufacturer’s identification mark
Tire size code
Manufacturer’s optional tire type code (3 or 4 letters)
Manufacturing week
Manufacturing year
Manufacturer’s code
*: The DOT symbol certifies that the tire conforms to applicable Federal
Motor Vehicle Safety Standards.
■Typical tire size information
The illustration i ndicates typical
tire size.
Tire use
(P = Passenger car,
T = Temporary use)
Section widt h (millimeters)
Aspect ratio
(tire height to section width)
Tire construction code
(R = Radial, D = Diagonal)
Wheel diameter (inches)
Typical DOT and Tire Iden tification Number (TIN)
Ty p e AType B
Tire size
1
2
3
4
5
6
7
8
1
2
3
4
5

6159-1. Specifications
9
Vehicle specifications
Load index
(2 digits or 3 digits)
Speed symbol
(alphabet with one letter)
■Tire dimensions
Section width
Tire height
Wheel diameter
Bead
Sidewall
Shoulder
Tread
Belt
Inner liner
Reinforcing rubber
Carcass
Rim lines
Bead wires
Chafer
6
7
1
2
3
Tire section names
1
2
3
4
5
6
7
8
9
10
11

6169-1. Specifications
This 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 Toyota
vehicles with info rmation on uniform ti re 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 Requ ire-
ments in addition to these grades. Quality grades can be found
where applicable on the tire sidewall between tread shoulder an d
maximum section width.
For example: Treadwear 200 Traction AA Temperature A
■Treadwear
The treadwear grade is a comparative rating based on the wear
rate of the tire when tested under controlled conditions on a s peci-
fied government t est 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 ma y differ significantly from the norm
due to variations in driving habits, service practices and diff erences
in road characteristics and climate.
Uniform Tire Quality Grading