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2. Tire Categories
ALL SEASON TIRES (ALL WEATHER TIRES): Tires that are designed to
perform in a variety of road conditions in all seasons of the year. An all
season tire will carry “M+S”, “M&S”, or “M/S” designation on the
sidewall. All Season tires may carry a Limited Treadwear Warranty
depending on line.
SUMMER TIRES ( MAXIMUM PERFORMANCE, HIGH PERFOR-
MANCE, ULTRA HIGH PERFORMANCE): Summer Performance tires
offer superior handling, grip and cornering ability compared to standard
tires. They are rated for operation at higher speeds. Maximum Perfor-
mance, High Performance and Ultra High Performance categories each
have different performance characteristics, UTQG ratings and rate of
wear depending on line. Some lines may carry a limited treadwear
warranty.
WINTER TIRES (SNOW TIRES): A winter tire is a tire with a tread design
and compound made specifically for snowy and icy conditions and is
identified by M&S, M+S or M/S markings on the sidewalls. Tires
designed for use in severe snow conditions are further identified with a
pictograph of a mountain with a snowflake on the sidewalls and must
meet specific snow performance test requirements. Pirelli Winter tires do
not carry a mileage warranty.
The information provided above is an overview of tire types. Tread
patterns and rubber compounds vary among the seasonal tire types and
provide varying performance characteristics and limitations based on
your individual needs and vehicle specifications. Summer performance
tires are different than winter and all season types. To determine which
Pirelli lines carry a Limited Treadwear Warranty, please refer to The PTI
Treadwear Mileage Warranty Conditions and Mileage Warranty sections
found in this document.
3. Pressure Recommendations
Recommended tire inflation pressures for your vehicle can be found
either on your vehicle’s tire placard or in your vehicle owner ’s manual.
Correct pressures are related to load, speed and vehicle handling and are
vital for even braking, maximum traction and good tire life. Under no
circumstances should your tire’s cold inflation pressure be less than that
indicated on your vehicle’s tire placard or in your vehicle owner ’s
manual or higher than the maximum cold inflation pressure molded on
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to the tire’s sidewall. Under inflation causes excessive flexing, deteriora-
tion of the tire and rapid wear of the tread edges. Over inflation results
in an uncomfortable ride, a reduced area of tire contact with the road
surface (i.e., smaller tire footprint), higher susceptibility to impact
damage and rapid wear on the tread center.
WARNING!
Driving on tires with improper inflation pressure is dangerous.
These situations can cause a tire failure, including tread/belt
separation, even at a later date, which could lead to an accident and
serious personal injury or death.
Inflation pressure must be checked at least once a month and should be
checked only when the tire is cold or before it has been driven. Driving
even a short distance (1 kilometer or 2 to 3 minutes) causes tires to heat
up and the air pressure to increase approximately 4 psi. In case it is
necessary to adjust the air pressure in tires that have been driven, the air
pressure should be increased to a gauge reading of 4 psi higher than the
recommended cold inflation pressure.
For Example Only:
Gauge Reading of Hot Tire: 27 PSI.
Recommended Cold Inflation Pressure: 26 PSI
Desired Gauge Reading of Hot Tire: 26 PSI+4PSI=30PSI
Therefore: Add 3 PSI
Check the cold inflation pressure on the tires, at least by the next day.
Never reduce or “bleed” pressure from hot tires since your tires will then
be underinflated when they cool down. Always use a reliable pressure
gauge.
4. UHP Summer Tires
Rubber compounds formulated for ultra high performance summer tires
can lose flexibility and may develop random surface cracks at cold
temperatures. Therefore extra care should be used in handling tires in this
condition. These compounds are optimized for maximum dry and wet
performance in warm conditions. Special tread compounds in these tires
will have decreased performance, such as lateral and braking traction, at
temperatures below 7° C or when driving on snow or ice. Therefore, it is
recommended to install winter tires in these conditions.
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8. Tire Replacement
The tires fitted to your vehicle as original equipment were tested and
approved by the vehicle manufacturer and the tire manufacturer and take
into account all aspects of the vehicle’s operation. Changes in the tire size,
type or construction should not be made without seeking advice from the
vehicle or tire manufacturer or an authorized Pirelli dealer since unap-
proved tires on your vehicle could adversely affect steering, handling,
braking and traction. The tire information (tire size, load index and speed
symbol) as found on the vehicle placard or in the owner ’s manual should
always be followed when replacing tires.
It is strongly recommended that Pirelli tires be mounted in sets of four
with the same tread type. Pirelli tires should not be mixed with other tire
brands. It is necessary to follow this procedure because different tire
constructions have different handling characteristics. Tires on the same
axle must be the same manufacturer, brand, tire size, load index, speed
rating and Pirelli part number.
When changing only two tires on a vehicle which is homogeneously
fitted (four tires of the same tire size), fit the new tires on the rear axle.
This applies to all vehicles regardless of their drive axle. (Front or Rear
Drive).
On all wheel drive or four wheel drive vehicles the tires must always be
replaced in sets of four.
When replacing tires on light truck vehicles, you should always follow
the vehicle manufacturer ’s recommendations. Passenger and light truck
tires are not interchangeable, due to differences in their pressures and
load carrying capacity.
P-Metric and Euro-metric Interchangeability: Euro-metric (Example: 225/
45R17) tires have a load index which is equal to or greater than that of the
same size P-metric (Example: P225/45R17) tire. Therefore, they have the
same or higher load carrying capacity at the maximum rated inflation
pressure. Always check with your tire dealer or Pirelli Tire Consumer
Affairs to be sure of the exact interchangeability to maintain proper
vehicle dynamics.
Please be aware that it is important that, before fitting the suggested tires,
the fitment is allowed by the technical specifications of the vehicle, the
vehicle manufacturer and the relevant homologations. Pirelli Tire does
not express any view as to the compatibility of the wheel/tire combina-
tion with the technical specifications for the chassis and vehicle.
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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; overload-
ing; 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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TIRE SAFETY AND MAINTENANCE INFORMATION
IMPORTANT SAFETY INFORMATION
This manual is not intended to provide proper training or service
procedures for tire mounting, dismounting, balancing, rotation, or repair.
Please leave these tasks to qualified tire service professionals.
mNOTICE!
•Toyo brand tires are designed and built with great care. Any tire, no matter
how well constructed, can fail as a result of punctures, impact damage,
underinflation/overloading or other conditions resulting from use. Tire
failures may create a risk of property damage or personal injury. To obtain
the highest possible performance, tires must be maintained properly.
•Remember, you are ultimately responsible for the tires installed on your
vehicle.
Inflation pressure can decrease by 1 psi for every 10°F temperature drop
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.
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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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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.
Under inflation 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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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.
mNOTICE!
The inflation pressure shown on the sidewall of the tire is not the intended
inflation pressure for the vehicle! Always refer to the vehicle’s Tire
Information Placard.
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