wheel NISSAN 370Z ROADSTER 2012 Z34 Towing Guide

2012 NISSAN Towing Guide 4 Š Installing an aftermarket hitch may affect the rear crash performance of your vehicle.
Š Be sure that the hitch does not interfere in any way with the vehicle’s impact-absorbing
bumper.
Š Regularly check to see that all hitch-mounting bolts are securely fastened.
Š For receiver-type hitches using a ball mount, the ball mount should be removed when not
towing.
Š If you install a hitch yourself, remember that it must be securely attached to the frame or
underbody, according to the manufacturer’s instructions. Never attach a hitch or towing
device to the vehicle axle housing. This may damage the housing, wheel bearings,
wheels, or tires.


Hitch Types


Bumper Hitch – This is a special reinforced
bumper designed to accommodate a hitch
ball.








Receiver Hitch – A receiver hitch is bolted
directly to the vehicle structure for added
strength and durability. NISSAN bolt-on
receiver hitches are designed specifically
for NISSAN vehicles and include the
necessary reinforcements, with ample
clearance around bumpers, frame members,
etc. These hitches allow for the removal of
the ball mount when not towing.

2012 NISSAN Towing Guide 6 5th Wheel or Gooseneck Hitch –
Mounted in the bed of a pick-up and
designed for heavy-duty applications,
these types of hitches are not available
from NISSAN but can be purchased from
a professional supplier of towing
equipment.*
A 5th wheel or gooseneck hitch is
usually installed and adjusted to meet the
requirements of a particular trailer, but two
basic rules hold true in every case. First,
the hitch should be mounted a minimum
2 inches forward of the rear axle centerline.
Second, it should be securely attached
directly to the truck frame. This installation
should be done by professionals only, as it
is very important to mount the hitch
correctly to distribute the king pin load for
the proper load carrying and sway control
performance.

BALL MOUNT
A ball mount (also known as a drawbar) is a bar that holds a hitch ball and is inserted into a
receiver-type hitch. Ball mounts come in a number of weight capacities (3,500 lbs., 5,000 lbs.,
etc.) and sizes (1
1/4”, 2”, etc.), and can be
weight-distributing or non-weight-distributing.

HITCH BALL
A hitch ball is bolted through a ball mount or
a hitch hole in the tow vehicle’s rear bumper.
The coupler on the trailer tongue attaches
over the hitch ball.

* At this time, Titan is the only NISSAN vehicle
approved for 5th wheel and gooseneck trailer towing. See your vehicle owner’s manual for details.

5th Wheel Hitch

Gooseneck Hitch
Hitch
Mount BallBall

2012 NISSAN Towing Guide 7 Like ball mounts, hitch balls are available in a number of weight capacities and sizes. Always
make sure the hitch ball selected has the proper shank diameter and weight rating for the ball
mount as well as the coupler on your trailer. Using a 1
7/8” hitch ball in a 2” coupler, for example,
could result in the trailer separating from the tow vehicle.
The diameter of the hitch ball shank must be matched to the ball mount hole diameter. The
shank should be no more than
1/16” smaller than the hole.
To keep the hitch ball in top condition, a simple maintenance routine is recommended.
Coating it with light grease will minimize wear of both the coupler and hitch ball. Also, by
removing the hitch ball when not towing, or by protecting it with a special cover, you will help
prevent rust from forming on it.

TRAILER TONGUE
The tongue is the part of the trailer that extends forward to meet the tow vehicle, and it also
carries the coupler assembly. Knowledge of the trailer minimum and maximum tongue load
(conventional trailers) and king pin load (5th wheel and gooseneck trailers) is critical as it can
have a significant effect on the handling of the tow vehicle. Refer to your vehicle owner’s
manual to view the maximum conventional trailer tongue load listed for your vehicle, and
always maintain between 10-15% of the trailer weight or within the total trailer load
specification recommended by the trailer manufacturer.

SAFETY CHAINS/CABLES
Always use suitable safety chains/cables
between the tow vehicle and the trailer. If
the hitch should break or become
disengaged for some reason, these
chains/cables will provide an emergency
connection between the vehicle and the
trailer.
The chains/cables should be crossed
under the trailer tongue and attached to the
hitch or vehicle frame. Crossing the
chains/cables under the tongue will help
prevent the tongue from hitting the ground
should the trailer become disconnected.
Be sure to leave enough slack in the
chains/cables to turn corners without
binding; however, note that excessive slack
Not OK
OK

2012 NISSAN Towing Guide 9 converter” must be used, as a converter of this type creates only minimal additional electrical
demand (draw) on the vehicle lighting circuits, which helps to ensure protection for the
vehicle’s sensitive electronics.
Always check for correct operation of the taillights, stoplights, and turn signal lights every
time you connect a trailer for towing. Never replace vehicle fuses with fuses of a higher
amperage rating than the original.
NOTE – Improper or poor quality trailer harness wiring may affect your vehicle’s electrical
system. Use only a NISSAN approved wiring harness, or, consult your dealer or a professional
supplier of towing equipment for compatible equipment.

BRAKES
As with hitches, several types of braking systems are available. Most states require a separate
braking system on trailers with a loaded weight above a specific amount, therefore you should
check to ensure you comply with all regulations. Have a professional supplier of towing
equipment demonstrate proper brake function testing.

NOTE – Never connect a hydraulic trailer brake system directly to the vehicle hydraulic
brake system.

Surge Brakes – The surge brake actuator is mounted on the trailer tongue with a hydraulic
line running to each trailer wheel. Surge brakes are activated by the trailer pushing against the
hitch ball when the tow vehicle is braking. Hydraulic surge brakes are common on rental
trailers and some boat trailers. In this type of system, there is no hydraulic or electric
connection for brake operation between the tow vehicle and the trailer.

Electric Trailer Brakes – Electric braking systems are activated by an electronic signal sent
from a trailer brake controller (special brake-sensing module). If electric trailer brakes are used,
NISSAN recommends all-electronic actuation because with this system it will not be
necessary to tap into the tow vehicle’s hydraulic system. For adjustment specifications, refer
to the brake controller manual for the controller being installed.
For your convenience, Armada, Frontier, Pathfinder, Titan, and NV vehicles are pre-wired to
accommodate most popular electric trailer brake controllers. A wiring harness* is either
included with your vehicle or available from your NISSAN dealer. This harness provides
electric trailer brake controller input and output connections to the vehicle wiring. See a
professional supplier of towing equipment for electric trailer brake controller availability.

* Contact a NISSAN dealer or a professional supplier of towing equipment for information on trailers
equipped with electric brakes and for Genuine NISSAN jumper harness availability for your specific
vehicle.

2012 NISSAN Towing Guide 12 On all NISSAN vehicles, the GVWR is shown on the
Federal Motor Vehicle Safety Standard (F.M.V.S.S.)
certification label located in the driver’s-side door area.
To avoid overloading the vehicle, be sure
to include the trailer tongue/king pin load as a
part of the cargo when determining how much weight
can be safely carried inside the vehicle. The weight of
the roof rack cargo should also be included.






















GROSS AXLE WEIGHT (GAW)
The Gross Axle Weight (GAW) is the maximum weight each axle (front and rear) is designed
to safely carry.
To determine the GAW, load the vehicle as you would for towing and attach the loaded
trailer. At a public scale, with the loaded trailer attached, place only the tow vehicle front
wheels on the scale to determine the actual front axle GAW. To obtain the rear axle GAW,
place all four tow vehicle wheels on the scale. From that figure, subtract the front GAW and
you will have the rear GAW amount.
The GAW you come up with must not exceed the Gross Axle Weight Rating (GAWR)
for your vehicle. On NISSAN vehicles, the GAWR for both axles is listed on the F.M.V.S.S.
certification label.

MFD BY NISSAN MOTOR CO., LTD
DATE
GVWR
GAWR FR.
WITH

GAWR RR.
WITH
THIS VEHICLE CONFORMS TO
ALL APPLICABLE FEDERAL
MOTOR VEHICLE SAFETY
STANDARDS IN EFFECT ON
THE DATE OF MANUFACTURE
SHOWN ABOVE.
SEE OWNERS MANUAL FOR
ADDITIONAL INFORMATION.
TIRES
TIRES
TYPE: TRUCK
MODEL: 3B000
COLOR TRIM TRANS
AXLE ENGINE

RIMS AT PSI
COLD SINGLERIMS AT PSI
COLD SINGLE

F.M.V.S.S.
Certification Label

2012 NISSAN Towing Guide 13










GROSS COMBINED WEIGHT (GCW)
The Gross Combined Weight (GCW) is the total weight of the tow vehicle with all
passengers, cargo, and fuel, plus the total weight of the trailer and all its cargo.
To determine the GCW, simply weigh your vehicle when fully loaded and ready to tow, and
add in the weight of the loaded trailer.
The GCW you come up with must not exceed the Gross Combined Weight Rating
(GCWR) for your vehicle. Refer to your vehicle owner’s manual to view the GCWR listed for
your vehicle.

TRAILER TONGUE/KING PIN LOAD
The amount of weight pressing down on the tow vehicle hitch is called trailer tongue load
(conventional trailer) or king pin load (5th wheel and gooseneck trailers).
To measure trailer tongue/king pin load, place the tongue of the trailer on a scale when the
trailer is not attached to the
vehicle. A separate vehicle
jack — not the trailer jack —
should be used, as the
location of the trailer jack is
rearward of the trailer tongue
and will not give you an
accurate measurement of the
true tongue/king pin load.
Make sure the vehicle jack is
placed directly under the
trailer tongue coupler, and the tongue is set at the height/level of the tow vehicle hitch.
For proper handling, you must keep conventional trailer tongue load between 10-15% of
the actual trailer weight, within the limits of the maximum trailer tongue load allowable.

2012 NISSAN Towing Guide 14 For example, to determine the proper trailer tongue load for a 1,500-lb. trailer, multiply the
weight of 1,500 lbs. by 10% to arrive at a figure of 150 lbs. 5th wheel and gooseneck trailer
king pin load must be kept between 15-25% of the actual trailer weight, within the limits of
the king pin load allowable.
Some trailer types may require different trailer tongue loads for safe towing. Always follow
the trailer manufacturer’s recommendations for proper trailer set-up and trailer tongue load.
Keep the trailer tongue load within the maximum trailer tongue load allowable. Additionally,
make sure the vehicle has the payload capacity available for the trailer tongue load.
Refer to your vehicle owner’s manual to view the maximum conventional trailer tongue load
listed for your vehicle.
NOTE – The vehicle weight ratings (GVWR, GAWR, GCWR, etc.) must not be
exceeded, regardless of trailer or hitch type.











HITCH & TRAILER HEIGHT
It is important that your trailer floor and tongue ride as level as possible. This will help prevent
over-angling, bottoming-out, and improper tongue load and load transfer. Therefore, the hitch
or trailer tongue must be adjusted during the initial vehicle/trailer fit-up to ensure a level ride.
Ball mounts are available in different configurations to adjust the hitch ball height.

TIRE PRESSURE
When towing a trailer, increase the tow vehicle tire pressures to the recommended cold
specifications. You will find these figures in the vehicle owner’s manual and on the tire
pressure chart located in the vehicle. Trailer tire condition, size, load rating, and inflation
pressure must be in accordance with the trailer and tire manufacturer’s specifications.

2012 NISSAN Towing Guide 15
TOWING
SAFETY

Towing can significantly alter the handling and performance characteristics of your vehicle.
Plus, it puts increased strain on the engine and drivetrain. Therefore, it is always a good idea
to approach towing from the standpoint of safety — whether you are purchasing equipment or
actually pulling the trailer.
Always make sure your vehicle’s towing capacity is adequate for the trailer you intend to
tow. Buy or lease only quality equipment. In addition, be certain that you have all of the
equipment needed for safe towing, such as safety chains/cables, electric trailer brakes,
electric trailer brake controller, breakaway switch, and extended rear view mirrors.
You should follow a more frequent maintenance schedule and check fluid levels, pressures,
tire condition, etc., more often when on the road. See your vehicle owner’s manual for details.

LOADING YOUR TRAILER
Taking the time to load and balance your trailer properly will improve overall handling and
minimize the strain on your tow vehicle. Incorrectly loaded trailers tend to sway or swing from
side to side, upsetting vehicle handling. Careful loading and balancing can help eliminate
these problems.
As mentioned earlier, conventional trailer tongue load must fall between 10-15% of the
total trailer weight, or within the limits of the maximum trailer tongue load specified by the
trailer manufacturer. King pin load — if using a 5th wheel or gooseneck trailer — must be
between 15-25% of the total trailer weight.
Excessive tongue/king pin load can actually
push down the vehicle in back, lifting the front
wheels to a point where traction, steering
response, and braking are severely reduced.
Insufficient tongue/king pin load can cause
instability, which may lead to “tail wagging” or
jackknifing.
With this in mind, proper loading is extremely
important. When loading a trailer, 60% of the
total cargo weight should be positioned in the
front portion of the trailer and 40% in the back. Then, the load should be adjusted until the
proper tongue/king pin load ratio is achieved.

2012 NISSAN Towing Guide 16 The trailer load should be balanced equally from
side-to-side. Unequal side-to-side loading can
negatively affect handling and braking. Once in
place, all cargo should be firmly secured to
prevent shifting. If the load should shift abruptly
during braking or cornering, it could quickly affect
the handling of your vehicle and cause a very
unsafe situation.
Finally, do not carry flammable materials, such
as gasoline, in your trailer. In the event of an accident, an explosion or fire could occur.

ENSURING VEHICLE/TRAILER STABILITY
Improper loading, excessive or insufficient trailer tongue/king pin load, overloading, excessive
trailer weight, poorly designed trailer suspensions, crosswinds, and poor maintenance are all
things that can affect the stability of your vehicle and trailer combination.
If swaying does occur, check the cargo load for proper balance and distribution to ensure
proper trailer tongue/king pin load. In addition, check the condition of the suspension and
shocks, as well as the tires, tire pressures, and wheel bearings on both the tow vehicle and
the trailer.
If the swaying continues and your trailer is suitably balanced and within the towing capacity
limits of your vehicle, discontinue towing and consult your NISSAN dealer or trailer
manufacturer to determine the problem.

VEHICLE SPEED
Please note that some states have specific regulations and speed limits for vehicles that are
towing trailers. Remember to reduce your speed in unsafe or less-than-ideal road conditions
or weather. When towing a trailer, braking distances increase while handling agility decreases.
Always leave yourself an extra margin of distance to respond to emergency situations.

PASSENGERS
Never allow passengers to ride inside a trailer while it is being towed. Not only is this
unlawful in most areas, passengers could be seriously injured during sudden trailer movement
or in an accident. In addition, trailers may allow fumes from the tow vehicle to leak inside. This
could result in carbon monoxide poisoning from the engine exhaust.

2012 NISSAN Towing Guide 18 If possible, before you actually hit the open road, practice towing in a large uncrowded area
such as a stadium or shopping center parking lot. Become especially familiar with backing up
a trailer — the maneuver many people find most difficult.

BRAKE SOONER
The combination of your tow vehicle and trailer obviously requires a greater distance to stop.
A good rule of thumb to remember is that for each 10 mph of speed, allow yourself one tow
vehicle and trailer length of distance between the front of your vehicle and the vehicle ahead.
When braking, use firm but gradual pressure on the pedal rather than panic braking.
Applying the brakes abruptly or with too much force can cause the trailer to skid or jackknife
at its point of attachment with the vehicle. This, in turn, can throw the tow vehicle out of
control. If equipped with an electric trailer brake controller, follow the recommended
operational instructions.

PASS CAREFULLY
As mentioned in the introduction to this section, because of the added weight of the trailer,
acceleration capability is reduced and you will require a longer distance to pass another
vehicle. Be certain you have sufficient time and space to pass safely. Never attempt to pass
on hills or when going around curves.

CORNER MORE SLOWLY
Know your vehicle and trailer capabilities. Entering a sharp corner too quickly or abruptly can
“crack the whip,” whereby the trailer can actually pull the tow vehicle off the road. Therefore,
when approaching a relatively sharp corner, begin braking sooner than you would when not
towing. Do your braking in a straight line prior to the corner, and turn smoothly into it. In
addition, remember to make a wider turn than normal to ensure that the trailer safely clears the
inside of the turn.
When towing a 5th wheel or gooseneck trailer, do not make sharp turns while driving or
backing as the trailer may contact the vehicle and cause damage to both the trailer and
vehicle. A special extended 5th wheel pin box or sliding hitch may be required to provide
additional trailer-to-truck clearance for tight maneuvering.

BACK UP WITH CAUTION
Backing up with a trailer is a difficult maneuver. The best way to steer is by placing one hand
at the bottom of the steering wheel to direct the trailer. The trailer will go in the same direction