2012 TOYOTA TUNDRA torque

176 2-1. Driving procedures
NOTICE
■When driving the vehicle
●Do not depress the accelerator and brake pedals at the same time during
driving. If the brake pedal is depressed while driving with the accelerator
pedal depressed, driving torque may be restrained.
● Do not use the accelerator pedal or depress accelerator and brake pedals
together to hold the vehicle on a hill.
■ When parking the vehicle
Always put the shift lever in P.
Failure to do so may cause the vehicle to move or the vehicle may acceler-
ate suddenly if the accelerator pedal is accidentally depressed.
■ Avoiding damage to vehicle parts
●Do not turn the steering wheel fully in either direction and hold it there for a
long time.
Doing so may damage the power steering pump.
● When driving over bumps in the road, drive as slowly as possible to avoid
damaging the wheels, underside of the vehicle, etc.
■ If you hear a squealing or scrapin g noise while driving (brake pad wear
limit indicators)
Have the brake pads checked and replaced by your Toyota dealer as soon
as possible.
The rotor damage can result if the pads are not replaced when needed.
It is dangerous to drive the vehicle when the wear limits of the brake pads
and/or that of the brake discs are exceeded.
■ If you get a flat tire while driving
A flat or damaged tire may cause the following situations. Hold the steering
wheel firmly and gradually press the brake pedal to slow down the vehicle.
●It may be difficult to control your vehicle.
● The vehicle will make abnormal sounds.
● The vehicle will behave abnormally.
Replace a flat tire with a new one. ( P. 623)

249
2-4. Using other driving systems
2
When driving
Driving assist systems
To help enhance driving safety and performance, the following sys-
tems operate automatically in res ponse to various driving situations.
Be aware, however, that these systems are supplementary and
should not be relied upon too heavi ly when operating the vehicle.
■ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenly, or if
the brakes are applied while driving on a slippery road surface.
■Brake Assist
Generates an increased level of braking force after the brake pedal is
depressed, when the system detects a panic stop situation.
■VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or turning
on slippery road surfaces.
■Trailer Sway Control
Helps the driver to control trailer sway by selectively applying brake
pressure for individual wheels and reducing engine torque when trailer
sway is detected.
Trailer Sway Control is part of the VSC system and will not operate if
VSC is turned off or experiences a malfunction.
■ TRAC (Traction Control) for 2WD models and 2WD mode on
4WD models
Maintains drive power and prevents the rear wheels from spinning
when starting the vehicle or accelerating on slippery roads.
■A-TRAC (Active Traction Control) for 4WD mode on 4WD
models
Maintains drive power and prevents all wheels from spinning when
starting the vehicle or accelerating on slippery roads.

281
2-5. Driving information
2
When driving
Trailer Tongue Weight and Trailer Kingpin Weight
● A recommended tongue weight or kingpin weight varies in accor-
dance with the types of trailers or towing as described below.
● To ensure the recommended values shown below, the trailer must
be loaded by referring to the following instructions.
1. Conventional Towing
The gross trailer weight should be distributed so that the tongue
weight is 9% to 11%. (Tongue Weight/Gross trailer weight x 100
= 9% to 11%)
Gross trailer weight
Tongue Weight
If using a weight distributing hitch when towing, return the front
axle to the same weight as before the trailer connection.
If front axle weight cannot be measured directly, measure the
front fender height above th e front axle before connection.
Adjust weight distributing hitch torque until front fender is
returned to the same height as before connection.
Do not reduce front fender height below original measurement.
The gross trailer weight, gross axle weight and tongue weight
can be measured with platform scales found at a highway
weighing station, building supply company, trucking company,
junk yard, etc.

634 5-2. Steps to take in an emergency
Lower the vehicle.
Firmly tighten each nut two or
three times in the order shown in
the illustration.
Tightening torqueFlat washer type (Aluminum
wheels)
97 ft·lbf (131 N·m, 13.4
kgf·m)
*
Taper type (Steel wheels)
154 ft·lbf (209 N·m, 21.3
kgf·m)
*: When temporarily used onspare tire/wheel, apply 154
ft·lbf (209 N·m, 21.3 kgf·m)

5
When trouble arises
637
5-2. Steps to take in an emergency
CAUTION
■Replacing a flat tire
●Observe the following precautions.
Failure to do so may resu
lt in serious injury:
• Lower the spare tire completely to the ground before removing it from under the vehicle.
• Do not try to remove the wheel ornament by hand. Take due care in handling the ornament to avoid unexpected personal injury.
• Do not touch the disc wheels or the area around the brakes imme- diately after the vehicle has been driven.
After the vehicle has been driven the disc wheels and the area
around the brakes will be extremely hot. Touching these areas with
hands, feet or other body parts while changing a tire, etc. may
result in burns.
●Failure to follow these precautions could cause the wheel nuts to
loosen and the tire to fall off, resulting in death or serious injury.
• Have the wheel nuts tightened with a torque wrench as soon as possible after changing wheels.
Steel wheel: 154 ft·lbf (209 N·m, 21.3 kgf·m)
Aluminum wheel: 97 ft·lbf (131 N·m, 13.4 kgf·m)
• When installing a tire, only use wheel nuts that have been specifi- cally designed for that wheel.
• Retighten the wheel nuts within 100 miles (160 km) of driving.
• If there are any cracks or deformations in the bolt screws, nut threads or bolt holes of the wh eel, have the vehicle inspected by
your Toyota dealer.
• When installing the wheel nuts, be sure to install them with the
tapered ends facing inward. ( P. 570)
●Do not attach a heavily damaged wheel ornament, as it may fly off the
wheel while the ve hicle is moving.

678 6-1. Specifications
Tires and wheelsType A
Type B
Tire size P255/70R18 112T
Tire inflation pressure
(Recommended cold tire
inflation pressure)Front tires:
30 psi (210 kPa, 2.1 kgf/cm
2 or bar)
Rear tires:
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Spare tire:
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Wheel size 18  8J
Wheel nut torque Steel wheels:
154 ft·lbf (209 N·m, 21.3 kgf·m)
Aluminum wheels:
97 ft·lbf (131 N·m, 13.4 kgf·m)
Tire size
P275/65R18 114T,
P255/70R18 112T (spare tire)
Tire inflation pressure
(Recommended cold tire
inflation pressure)Front tires:
30 psi (210 kPa, 2.1 kgf/cm
2 or bar)
Rear tires:
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Spare tire:
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Wheel size 18  8J
Wheel nut torque Steel wheels:
154 ft·lbf (209 N·m, 21.3 kgf·m)
Aluminum wheels:
97 ft·lbf (131 N·m, 13.4 kgf·m)

679
6-1. Specifications
6
Vehicle specifications
Type C
Tire size
P275/55R20 111H,
P255/70R18 112T (spare tire)
Tire inflation pressure
(Recommended cold tire
inflation pressure)Front tires:
30 psi (210 kPa, 2.1 kgf/cm
2 or bar)
Rear tires:
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Spare tire:
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Wheel size 20
 8J,
18  8J (spare wheel)
Wheel nut torque Steel wheels:
154 ft·lbf (209 N·m, 21.3 kgf·m)
Aluminum wheels:
97 ft·lbf (131 N·m, 13.4 kgf·m)