2015 INFINITI Q50 HYBRID four wheel drive

Any tire, no matter how well constructed, may fail due to
improper maintenance or service factors. This could
create a risk of property damage and serious or fatal
injury. Disregarding any of the safety precautions and
instructions contained in this m anual may result in tire
failure or explosion caus ing serious personal injury or
death. For your safety, comply with the following:
TIRE INFLATION
Keep tires inflated to the pressures recommended on
the tire data placard. (See your Owner’s Manual for
location.) These inflation pressures must be maintained
as a minimum. However, do not exceed the maximum
pressure rating indicated on the tire sidewall.
CHECK INFLATION PRESSURES ON ALL YOUR TIRES, IN-
CLUDING THE SPARE, WHEN TIRES ARE COLD, AT LEAST
ONCE A MONTH BEFORE DRIVING.
Failure to maintain correct inflation may result in im-
proper vehicle handling and may cause rapid and ir-
regular tire wear, sudden tire destruction, loss of vehicle
control and serious personal injury. Therefore, inflation
pressures should be checked at least once a month and
always prior to long distance trips.
Pressures should be checked when tires are cold. The
tires are cold when your vehicle has been driven less
than a mile at moderate speed after being stopped for
three or more hours.
CHECKING PR ESSUREWHEN TIRES ARE HOT
If you must add air when your tires are hot, add four
pounds per square inch (psi) (28kPa) above the recom-
mended cold air pressure. Recheck the inflation pres-
sure when the tire is cold.
For Example Only:
Gauge reading of hot tire: 32psi
If recommended pressure is: 30psi
Desired gauge reading of hot tire 30 + 4psi = 34psi
Check cold pressures as soon as possible, at least by the
next day. Never “bleed” air from hot tires as your tire will
be underinflated. Use an accurate tire gauge to check
pressures. Never allow children to air up tires.
DRIVING ON ANY TIRE THAT DOES NOT HAVE THE COR-
RECT INFLATION PRESSURE IS DANGEROUS. For replace-
ment tires, the correct inflation pressure will be provided
by your tire retailer. If not, refer to the vehicle decal.
Underinflation produces extreme flexing of the sidewalls
and builds up heat which may result in sudden tire de-
struction and serious personal injury. Overinflating can
cause the tire to be more susceptible to impact damage.
LOAD LIMITS
DO NOT OVERLOAD. DRIVING ON ANY OVERLOADED
TIRE IS DANGEROUS. Never load your tires beyond the
load carrying limits molded into the sidewall of the tires
or the maximum vehicle load limit as shown on the
vehicle tire data placard, whichever is less. Overloading
causes heat to build up which can lead to sudden tire
failure and serious personal injury.
SPEED LIMITS AND SPEED RATED TIRES
HIGH SPEED DRIVING CAN BE DANGEROUS. Never op-
erate your vehicle in excess of lawful speeds or the
maximum speeds justified by the driving conditions.
Excessive speeds or racing can cause heat buildup in a
tire leading to possible f ailure and serious personal
injury.
Correct inflation pressure is especially important. How-
ever, at high speeds, ev en with the correct inflation
pressure, a road hazard, for example, is more difficult to
avoid and if contact is made, there is a greater chance of
causing tire damage than at the lower speed. Moreover,
driving at high speed reduces the reaction time avail-
able to avoid accidents and bring your vehicle to a safe
stop. If you see any damage to a tire or wheel, replace it
with your spare tire and see your tire retailer at once.
Tire speed ratings do not imply that a vehicle can be
safely driven at the maximum speed for which the tire is
rated. In addition, some damages or improper repairs
may cause a speed-rated tire to lose its speed rating.
Exceeding the tire’s maximum speed rating will cause
the tire to build up excessive heat which can cause tire
damage that could result in sudden tire destruction and
rapid air loss. Failure to control a vehicle with sudden air
loss can lead to an accident. In any case, you should not
exceed reasonable speeds as indicated by the legal
limits and driving conditions.
SPEED SYMBOLS -are shown on the sidewall of some
tires. The following table shows the maximum speed
corresponding to the symbol.
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1 Provided by and published at the requ est of the tire manufacturers/warrantors.
IMPORTANT TIRE SAFETY INFORMATION139

HARD BRAKING
You must inspect your tires after any hard braking cir-
cumstances or after tires have slid on the pavement.
This can cause a flat spot in a section of the tire tread.
TIRE SPINNING
Never spin your tires above a speedometer reading of
35 mph (55 km/h) if your vehicle becomes stuck. The
centrifugal force generated by the free spinning
tire/wheel assembly may cau se a sudden tire explo-
sion, resulting in vehicle damage and/or serious per-
sonal injury or death. Never allow anyone to stand near
or behind a tire spinning at high speed while attempting
to push a vehicle that is stuck. When in mud, sand,
snow, ice or other slippery conditions, do not indulge in
excessive wheel spin. In such conditions, with auto-
matic tran smission vehicles , by accelerating the engine
excessively, it is possible to spin one of the drive tires
beyond its speed capability. This is also true when bal-
ancing a drive tire/wheel assembly using the engine of
the vehicle to spin the wheel.
TIRE TREAD
Tires must be replaced when the depth of the tread
reaches 2/32 inch (1.6 mm). Tires are manufactured
with tread wear indicators molded into the tire grooves
which indicate tread wearout. As tires approximate
2/32 inch (1.6 mm) wearout, the tread gauge becomes
thinner and more vulnerable to the effects of road haz-
ards. Also, worn tires are more subject to hydroplaning,
which can cause loss of control. Therefore, visual tire
inspection becomes more crucial as the tires wear out.
WORN TIRES
Never drive on worn tires. Tires should be replaced by
trained personnel when 2/32nds of an inch tread depth
remains, as indicated by the tread wear indicators molded
into the tread grooves. In most states, it is illegal to drive
with less than 2/32nds of an inch of tread remaining.
TIRE MIXING
For best performance select tires similar in size and load
rating to the original equipment tires. It is recom-
mended that the same size and type of tire be used on
all four wheel positions. In certain tires, casing ply ma-
terial and ply construction may vary as indicated on the
sidewall of the tire. When changing or replacing tires, it
is preferred that all four tires are the same construction
type (i.e., High Performance, All Season, Mud & Snow)
and construction (Radial or Bias Ply). Before mixing tires
of different types on a vehicle in any configuration, be
sure to check the vehicle Owner’s Manual for its recom-
mendations.
Tires which meet the Rubber Manufacturer’s Associa-
tion (RMA) definition of mud and snow tires are marked
M/S, M+S, M&S. On such tires, this designation is
molded into the sidewall. Tires without this notation are
not recommended for mud and/or snow driving.
If snow tires are needed, it is necessary to select tires
equivalent in size and load rating to the original equip-
ment tires. Always fit performance snow tires in sets of
four (4) for optimum mud & snow traction and mainte-
nance of vehicle handling characteristics. If you do not,
it may adversely affect the safety and handling of your
vehicle. It is also important to check the vehicle Owner’s
Manual before mixing or matching tires on 4-wheel drive
vehicles as this may require special precautions. Please refer to your Owner’s Manual for more informa-
tion on tire replacement precautions.
TIRE ROTATION
Tires on your Infiniti vehicle should be rotated every
7,500 miles or as irregular wear develops. If irregular
wear becomes apparent or if the wear rate on the tires is
perceptibly uneven, the tires should be rotated in such a
way to alleviate the problem. Check your vehicle for any
mechanical problems and correct if necessary. Any rota-
tion pattern or procedure may be followed including
those indicated in the Owner’s Manual. Some tires have
arrows on the sidewall showing the direction in which
the tire should turn. When rotating this type of tire, care
must be taken to maintain the proper turning direction
as indicated by the arrows.
Some vehicles have different
tire sizes specified for front and rear axles. Tires on these
vehicles should not be rotated side to side (unless they
are non-directional) . Where a temporary type spare tire
is available, it should not be included in the tire rotation
schedule. Such tires are intended for temporary use
only.
REPLACING TWO TIRES
If your vehicle was originally equipped with four tires
that were the same size and you are only replacing two
of the four tires, install the new tires on the rear axle.
Placing new tires on the front axle may cause loss of
vehicle control in some driving conditions and cause an
accident and personal injury.
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42 IMPORTANT TIRE SAFETY INFORMATION1