2008 TOYOTA TUNDRA width

459
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
XS20012
This illustration indicates typical tire
size.
1. Tire use (P=Passenger car, T=Temporary use)
2. Section width (in millimeters)
3. Aspect ratio (tire height to section width)
4. Tire construction code (R=Radial, D=Diagonal)
5. Wheel diameter (in inches)
6. Load index (2 digits or 3 digits)
7. Speed symbol (alphabet with one letter)
SU21026a
1. Section width
2. Tire height
3. Wheel diameter
SU21027
1. Bead
2. Sidewall
3. Shoulder
4. Tread
5. Belt
6. Inner liner
7. Reinforcing rubber
8. Carcass
9. Rim lines
10.Bead wires
11. Chafer
—Tire size —Name of each section of tire

460
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
This information has been prepared
in accordance with regulations issued
by the National Highway Traffic Safe-
ty Administration of the U.S. Depart-
ment of Transportation. It provides
the purchasers and/or prospective
purchasers of Toyota vehicles with in-
formation on uniform tire quality grad-
ing.
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 Fed-
eral Safety Requirements in addi-
tion to these grades. Quality
grades can be found where appli-
cable on the tire sidewall between
tread shoulder and maximum sec-
tion 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 un-
der controlled conditions on a speci-
fied government test course. For ex-
ample, a tire graded 150 would wear
one and a half (1 −1/2) times as well
on the government course as a tire
graded 100. The relative performance
of tires depends upon the actual
conditions of their use, however, and
may depart significantly from the
norm due to variations in driving hab-
its, service practices and differences
in road characteristics 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 pave-
ment as measured under controlled
conditions on specified government
test surfaces of asphalt and concrete.
A tire marked C may have poor trac-
tion performance.
Warning: The traction grade assigned
to this tire is based on braking
(straight ahead) traction tests and
does not include cornering (turning)
traction.
—Uniform tire quality grading

463
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
Ti r e relat ed ter mMeaning
Occupant distributiondistribution of occupants in a vehicle as specified in the third column of Table
1 that follows
Production options weight
the combined weight of those installed regular production options weighing over
2.3 kg (5 lb.) in excess of those standard items which they replace, not pre-
viously considered in curb weight or accessory weight, including heavy duty
brakes, ride levelers, roof rack, heavy duty battery, and special trim
Rima 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 designationrim diameter and width
Rim type designationthe industry of manufacturer ’s designation for a rim by style or code
Rim widt hnominal distance between rim flanges
Vehicle capacity weight
(Total load capacity)the rated cargo and luggage load plus 68 kg (150 lb.) times the vehicle’s desig-
nated seating capacity
Vehicle maximum load on the tirethe load on an individual tire that is determined by distributing to each axle
its share of the maximum loaded vehicle weight and dividing by two
Vehicle normal load on the tire
the load on an individual tire that is determined by distributing to each axle
its share of the curb weight, accesso ry weight, and normal occupant weight
(distributed in accordance with Table 1 that follows) and dividing by two

466
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
Ti r e relat ed ter mMeaning
Outer diameterthe overall diameter of an inflated new tire
Overall widththe linear distance between the exteriors of the sidewalls of an inflated tire,
including elevations due to labeling, decorations, or protective bands or ribs
Passenger car tire
a tire intended for use on passenger cars, multipurpose passenger vehicles,
and trucks, that have a gross vehicle weight rating (GVWR) of 10,000 lb. or
less
Plya layer of rubber−coated parallel cords
Ply separationa parting of rubber compound between adjacent plies
Pneumatic tire
a mechanical device made of rubber, chemicals, fabric and steel or other mate-
rials, that, when mounted on an automotive wheel, provides the traction and
contains the gas or fluid that sustains the load
Radial ply tirea 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 tirea tire designed to operate at higher loads and at higher inflation pressures
than the corresponding standard tire
S ec t ion widt hthe linear distance between the exteriors of the sidewalls of an inflated tire,
excluding elevations due to labeling, decoration, or protective bands
Sidewallthat portion of a tire between the tread and bead
Sidewall separationthe parting of the rubber compound from the cord material in the sidewall

561
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
As you might have difficulty in
identifying a flat or deflated tire, a tire
pressure warning system is provided on
this vehicle.
When replacing the wheels, be sure to
install tire pressure warning valves and
transmitters on the wheels. Consult your
Toyota dealer about how to set up the tire
pressure warning valves and transmitters.
CAUTION
Have the tires, wheels or tire pres-
sure warning valves and transmit-
ters replaced and ID codes regis-
tered by Toyota dealer. If you need
tire pressure warning valves and
transmitters, purchase from Toyota
dealer.
The tire pressure warning valve and
transmitter nuts should always be
tightened to a torque of 4 N·m (0.4
kgf·m, 2.9 ft·lbf).
The use of nongenuine wheels may
result in the tire pressure warning
system failure or airleak.
WHEN TO REPLACE YOUR WHEELS
If you have wheel damage such as
bending, cracks or heavy corrosion, the
wheel should be replaced.
If you fail to replace a damaged wheel,
the tire may slip off the wheel or cause
loss of handling control.
WHEEL SELECTION
When replacing wheels, care should be
taken to ensure that the wheels are re-
placed by ones with the same load ca-
pacity, diameter, rim width, and offset.
Correct replacement wheels are available
at your Toyota dealer.
A wheel of a different size or type may
adversely affect handling, wheel and bear-
ing life, brake cooling, speedometer/odom-
eter calibration, stopping ability, headlight
aim, bumper height, vehicle ground clear-
ance, and tire or snow chain clearance to
the body and chassis. Replacement with used wheels is not rec-
ommended as they may have been sub-
jected to rough treatment or high mileage
and could fail without warning. Also, bent
wheels which have been straightened may
have structural damage and therefore
should not be used. Never use an inner
tube in a leaking wheel which is designed
for a tubeless tire.
CAUTION
Observe the following instructions.
Otherwise, an accident may occur re-
sulting in death or serious injuries.
Do not use wheels other than the
manufacturer ’s recommended size,
as this may cause dangerous han-
dling characteristics resulting in
loss of control.
Fourwheel drive models:
Do not use wheels of different
brands, sizes and types, as this
may cause dangerous handling
characteristics resulting in loss of
control.
Replacing wheels

578
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
Tw o−wheel drive models
mm (in.)
Cabin type
Regular cab modelsDouble cab modelsCrew Max models
Bed typeStandard bedLong bedStandard bedLong bedShort bed
Overall length5330 (209.8)5810 (228.7)5810 (228.7)6290 (247.6)5810 (228.7)
Overall width2030 (79.9)2030 (79.9)2030 (79.9)2030 (79.9)2030 (79.9)
Overall height1930 (75.9)∗ 11925 (75.7)∗11930 (75.9)∗11925 (75.7)∗11925 (75.7)∗1
1925 (75.7)∗2, ∗
31920 (75.5)∗21925 (75.7)∗2, ∗
31920 (75.5)∗21920 (75.5)∗2, ∗
3
Wheelbase3220 (126.7)3700 (145.6)3700 (145.6)4180 (164.5)3700 (145.6)
Front tread1725 (67.9)1725 (67.9)1725 (67.9)1725 (67.9)1725 (67.9)
Rear tread1725 (67.9)1725 (67.9)1725 (67.9)1725 (67.9)1725 (67.9)
∗1: With P255/70R18 tires
∗ 2: With P275/65R18 tires
∗3: With P275/55R20 tires
Dimensions

579
2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
Four−wheel drive models
mm (in.)
Cabin type
Regular cab modelsDouble cab modelsCrew Max models
Bed typeStandard bedLong bedStandard bedLong bedShort bed
Overall length5330 (209.8)5810 (228.7)5810 (228.7)6290 (247.6)5810 (228.7)
Overall width2030 (79.9)2030 (79.9)2030 (79.9)2030 (79.9)2030 (79.9)
Overall height1940 (76.3)∗ 11935 (76.1)∗11940 (76.3)∗11935 (76.1)∗11935 (76.1)∗1
1935 (76.1)∗2, ∗
31930 (75.9)∗21935 (76.1)∗2, ∗
31930 (75.9)∗21930 (75.9)∗2, ∗
3
Wheelbase3220 (126.7)3700 (145.6)3700 (145.6)4180 (164.5)3700 (145.6)
Front tread1725 (67.9)1725 (67.9)1725 (67.9)1725 (67.9)1725 (67.9)
Rear tread1725 (67.9)1725 (67.9)1725 (67.9)1725 (67.9)1725 (67.9)
∗1: With P255/70R18 tires
∗ 2: With P275/65R18 tires
∗3: With P275/55R20 tires