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minimum tread depth and they may be dangerous if left in service.
Tires should be removed from service for numerous reasons,
including tread worn down to minimum depth, damage or abuse
(including, without limitation, punctures, cuts, impacts, cracks, bulges,
under inflation, overloading, etc.). For these reasons, tires, including
spares, should be inspected at least once a month and before long
trips. Inspection should occur regardless of whether the vehicle is
equipped with a tire pressure monitoring system. In addition to these
visual conditions, consumers should take note of and address any
change in performance such as increased air loss, noise or vibration or \
other factors.
The mere passage of time (age) does not cause tires to deteriorate,
but rather exposure to outside forces. The service life of a tire is a
function of service and storage conditions. For each individual tire,
this service life is determined by many factors such as temperature/
weather, storage conditions, and service conditions (e.g., load, speed,
inflation pressure, maintenance, and road hazard damage, etc.) to
which a tire is subjected throughout its life. Since service and storage
conditions vary widely, accurately predicting the service life of any
specific tire based on chronological age is not possible. There is no
scientific or technical data that establishes or identifies a minimum
or maximum service life, but the longer a tire has been in service,
the greater the chance that it will need to be replaced due to service-
related conditions.
Only use a mild soap solution to clean tires and rinse the soap off with
low pressure tap water, use of high-pressure sprayers may cause
damage. Never apply cleaners or other products to enhance sidewall
or tire appearance to avoid removal of substances which are intended
to protect the tire and reduce rubber degradation associated with the
impact of ozone and other environmental conditions.
The removal of these substances may degrade the rubber and can
lead to sidewall cracking. To remove the protective film from a Pirelli
tire with white letters, first flood the area with a stream of water from a
hose. After a minute or two the film will soften and it can be removed
with soft nylon brush if needed.
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Storage
Should you need to store tires they should be stored indoors in a
cool, dry place. Tire storage areas should be cool (45° F ~ 75° F),
dry, non-dusty, and moderately well ventilated. To protect your tires
from damage related to heat, water, ozone and direct sunlight, it is
suggested you place them in opaque, waterproof containers (e.g.,
plastic trash bags). It is vital that the tires do not come in contact \
with
sources of heat and/or ozone i.e. radiators, electric generators/motors,\
hot pipes, etc., and tires should never be allowed to stand or come into\
contact with water, grease, fuels, brake fluid or any other chemicals.
If you need to transport your tires, please follow the above guidelines.\
WARNING: Driving on an improperly stored tire is dangerous,
as the tire can suddenly fail, which can lead to an accident and
serious personal injury or death.
Tubes in Tubeless Tires
Under no circumstances are tubes to be used in Pirelli tires marked
“Tubeless”. This includes tires that have been repaired. If the tire’s
pressure retention ability has been affected, so as to necessitate a
tube being installed, the tire must be replaced instead.
Tire Valves
Whenever new tires are installed on your wheels, new tire valves of the \
correct type must be installed. During your routine tire inspection, ver\
ify
that all your valves have proper valve caps. Replace as necessary,
since the valve cap is also a seal against pressure loss.
Tire Dismounting and Mounting
Tire fitting should be left to professionals who have the equipment
and training to perform the task properly and safely using U.S. Tire
Manufacturers Association procedures or the vehicle manufacturer’s
recommendations. To maximize the performance of your tires, they
must be installed following the tire sidewall markings with respect to
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WHAT IS NOT COVERED?
This Limited Warranty does not cover the following categories
of claims:
Rapid Treadwear: Original equipment tires are not guaranteed to last a
specified number of miles.
Damage from road hazards (not limited to cuts, snags, bruises, impact
breaks, bulges, punctures, stone drills, chips, and scales), fire, theft,
or collision.
Conditions arising from improper tire/vehicle maintenance or use, not
limited to:
•
Irregular or excessive treadwear due to: Incorrect inflation;
overloading; vehicle misalignment; failure to rotate tires; and poor
or defective mechanical condition of brakes, shocks, and wheels;
or other factors attributable to the vehicle or wheel.
•
Any tire which has been run with low air pressure or while flat.
•
Damage due to abuse; vandalism; tire alteration; tire spinning;
racing; or other competitive activities.
•
Damage, corrosion, or deterioration from using oil-based
chemicals, water-based sealers, balancing substances, or
flammable gases.
•
Damage from improper use of tire chains.
Tires with the DOT identification number removed or rendered illegible.
Improper mounting, balancing or repair, not limited to: •
Improper tire mounting, or tire/wheel assembly imbalance.
•
Damage from incorrect mounting or dismounting of the tire,
incorrect wheel size, water or other material trapped inside the tire
during mounting, or failure to keep the tires balanced.
•
Damage resulting from improper repair materials or procedures.
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TOYO TIRE
213
Important factors in tire care are:•
Proper inflation pressure
•
Proper vehicle loading
•
Proper vehicle maintenance
•
Regular inspection
•
Good driving habits
Refer to your vehicle Owner’s Manual for additional tire safety and
service advice.
TIRE PRESSURE BASICS
The combined effect of losing 1 psi per month over several months
along with a 1 psi decrease for every 10°F temperature drop could
add up to a severe “run low” condition; consequently, it is important to
check your tires’ inflation pressure at least once per month. Inflation
pressure enables a tire to support its load; therefore, proper inflation
is critical.
HOW TO DETERMINE PROPER TIRE INFLATION PRESSURE
It is impossible to determine whether tires are properly inflated
just by looking at them.
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TOYO TIRE
215
It is important to check your tires using an accurate tire
pressure gauge, which can be purchased at your tire dealer
or auto supply store.
Underinflation can overload tires. Check the inflation pressure every
month, including for the spare tire, to make sure it’s up to specification.
Check it again before long trips or when carrying extra weight.
Look for the manufacturer’s recommended inflation pressure listed
on the Tire Information Placard usually located on your vehicle’s door
edge, door post, glove box, or inside the trunk lid.
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USING A TIRE PRESSURE GAUGE
For accuracy, check your inflation pressure with a tire pressure gauge
when tires are cold (for example, after being parked overnight). Driving
heats up tires and causes an inaccurate pressure reading.
To check inflation pressure with a tire pressure gauge:1.
Remove the tire valve cap.
2.
Place the end of the tire pressure gauge over the valve.
3.
Press the tire pressure gauge straight and firmly and take a
reading.
4.
If needed, inflate and recheck the pressure with the tire
pressure gauge.
5.
Replace the valve cap.
RECOMMENDATIONS FOR SAFE TIRE INFLATION •
If you must inflate your tires when they are hot, add 4 pounds per
square inch (4 psi) (28 kPa) above the recommended inflation
pressure specification. Recheck the inflation pressure when the
tires are cold and adjust to the recommended inflation pressure
shown on the vehicle’s Tire Information Placard.
•
Never release air or nitrogen from a hot tire in order to reach
the recommended cold tire pressure. Normal driving causes
tires to run hotter and inflation pressure to increase. If you
release pressure when your tires are hot, you may dangerously
underinflate your tires. If your tires lose more than 1 pound per
square inch (1 psi) per month, the tire, the valve, or the wheel
may be damaged. Consult your authorized Toyo Tires dealer for
an inspection.
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TOYO TIRE
217
• Over-inflation can cause the tire to be more susceptible to
impact damage.
•
Over-inflation or underinflation may adversely affect vehicle
handling.
•
Remember to check your spare tire. Consult your vehicle Owner’s
Manual for the correct inflation pressure and use of a “temporary
use” spare tire. The inflation pressure specified for a spare tire is
typically different from that specified for your regular tires.
•
Use valve caps to keep valve cores clean and clear of debris and
to help guard against air leakage.
VEHICLES EQUIPPED WITH TIRE PRESSURE MONITORING
SYSTEMS (TPMS)
Even if your vehicle is equipped with a tire pressure monitoring system,\
you should check your tire pressure at least once per month when the
tires are cold (for example, after being parked overnight). Tire pressure
warning systems are not a substitute for regular tire
pressure maintenance.
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Replacement tires for any vehicle must be of a size, load range, and
load capacity (by inflation) that is capable of supporting the same load
as the vehicle’s originally installed (OE) tires. Avoid installing used tires
on a vehicle. There is no way to determine what road hazards or abuse
a previously owned tire may have incurred.
The following procedures concerning replacement tires must
be followed:•
Confirm that the load-carrying capacity is greater than or equal
to the load-carrying capacity of the OE tire size at the pressure
indicated on the vehicle Tire Information Placard.
•
Carefully note any differences between recommendations for
front and rear axle positions regarding the tire size and/ or
inflation pressure.
•
The speed rating must be equal to or greater than what is specified
by the vehicle manufacturer if the speed capability of the vehicle is
to be maintained.
•
Tires should be mounted on approved wheel widths. If changing
tire sizes, check to make sure the wheel has adequate load and
inflation pressure capacity.
•
Body and chassis clearance must be checked on the vehicle’s
front and rear axles.
In addition to the above, light truck tire replacements should take into\
consideration the following: