•Inspect your tires for adequate tread depth. When the tire is worn to
the built-in indicators at 2/32” (1.6 mm) or less tread groove depth, the
tire is worn out and must be replaced. Never drive on tires to the point
that the tire cord or the fabric is exposed.
•Inspect your tires for uneven wear. Wear on one side of the tread or flat
spots in the tread may indicate alignment or other problems with the
tires or the vehicle. Consult your authorized Nitto dealer.
WARNING!
Never drive on a tire if there is any evidence of damage. Driving on
a damaged tire is dangerous. A damaged tire could suddenly fail,
which may result in loss of vehicle control and lead to serious
personal injury or death. Do not attempt to dismount, mount, or
repair a tire yourself. See your Nitto dealer immediately if you
detect damage.
IDENTIFYING DAMAGED WHEELS
Periodically check to see if any of the following symptoms exist, in which
case the wheel must be replaced:
•If the flange is bent.
•If welds or rivets are leaking.
•If the stud holes are elongated and not round. (Improper lug nut
tightening could cause this.)
•If there are cracks in the wheel.
WORN OUT TIRES
Tires must be replaced when tread is worn to 2/32” (1.6 mm). Treadwear
indicators on Nitto tire treads show the 2/32” depth (1.6 mm). Most
states require that tires be replaced when the tread depth is worn to 2/32”
(1.6 mm). Tires may lose sufficient wet and snow traction before reaching
2/32” (1.6 mm) of wear. Many wet weather accidents result from
skidding on worn out tires.
Excessively worn tires are more susceptible to penetrations. Consider
replacing your tires earlier if you drive in snow or wet conditions.
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WARNING!
Continued operation of your vehicle with excessively worn tires
may lead to loss of vehicle control in adverse weather conditions,
tire failure, and serious personal injury or death.
Any retail tire dealer will be glad to measure your tire’s tread depth for
you. Nitto recommends that tires be replaced in matched sets of four.
TIRE REPAIRS
If any tire has sustained a puncture, have the tire dismounted and
inspected internally by an authorized Nitto dealer for possible damage
that may have occurred. Only specially trained personnel using the
proper tools and procedures should repair tires.
WARNING!
Before having your tire repaired, tell your authorized Nitto dealer if
you have used an aerosol puncture sealant to inflate/seal the tire.
Aerosol puncture sealants could contain a highly flammable,
explosive gas.
Driving on an improperly repaired tire is dangerous. An improper
repair can cause further damage to the tire. It could fail suddenly,
which can result in loss of vehicle control and lead to serious
personal injury or death. To insure safety, go to your authorized
Nitto dealer for professional inspection and proper tire repairs.
Cosmetic Tire Alterations Can Be Dangerous! Remember — Do not
perform or allow anyone to perform any alterations to your tires.
Alterations may prevent proper performance, leading to tire
damage, which could result in sudden tire failure and loss of vehicle
control and lead to serious personal injury or death.
•Never repair a tire with 2/32” (1.6 mm) or less tread remaining. At this
tread depth, the tire is worn out and must be replaced.
•Never repair a tire with a puncture larger than ¼” (6.4 mm) in
diameter. Such tires cannot be properly repaired and must be replaced.
•Repairs of all tires (radial and non-radial) must be of the plug and
inside patch type. Using plugs alone on any type of tire is not a safe
repair.
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Nitto speed-rated passenger car tires may be repaired and returned to
service under the following conditions:
•Proper repair materials and procedures have been used.
•The damage or puncture is not larger than 1/4” (6.4 mm) in diameter.
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•The repair will be the first repair performed on that tire. (Only one
repair per tire is permitted in order to maintain a limited speed rating.)
•The tire must have more than 2/32” (1.6 mm) of tread remaining.
Nitto speed-rated passenger tires that have been properly repaired
qualify for reduced speed ratings as follows:
ORIGINAL SPEED RATING AFTER PUNCTURE REPAIR
(Y), Y, W, Z, V, VR, H H (maximum speed 130 mph)
TT
SS
The maximum speed of a vehicle is limited by the lowest-speed- rated
tire on the car.
mNOTICE!
A tire’s speed rating is void if the tire has been retreaded, damaged, abused, or
otherwise altered from its original condition. Thereafter, it should be treated
as a non-speed-rated tire. In addition, retreaded passenger and light truck
tires are not warranted by Nitto for any reason. Nitto speed ratings are
voided for retreaded tires.
PROPER SELECTION OF TIRES
When tires need to be replaced, don’t guess what tire is right for your
vehicle. First look at the vehicle Owner ’s Manual or the Tire Information
Placard. They tell you the size of the tires that were on the vehicle as
original equipment.
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.
WARNING!
Failure to install tires with adequate load capacity will result in tire
fatigue and sudden tire failure. This could lead to loss of vehicle
control, possibly resulting in personal injury or death.
(Continued)
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TIRE MIXING
WARNING!
Driving your vehicle with an improper mix of tire sizes,
constructions, and speed ratings can be dangerous. Your car ’s
handling characteristics can be adversely affected. You could have
an accident resulting in serious personal injury or death. Consult
your vehicle Owner ’s Manual or an authorized Nitto dealer for
proper tire replacement.
•Nitto recommends that all four tires be of the same size, speed rating,
and construction (radial or non-radial). In some cases the vehicle
manufacturer may require different sized tires for the front or rear
axles. Never mix P-metric or European Metric passenger tires with
LT-metric tires on the same vehicle.
•Match tire size designations in pairs on an axle, except during the
temporary use of a spare tire.
•If two radial tires and two non-radial tires are used on a vehicle, put
the radials on the rear axle. If radial and non-radial tires are used on a
vehicle equipped with dual rear tires, the radial tires may be used on
either axle.
SPEED-RATED TIRES
•If the vehicle Tire Information Placard and/or the vehicle Owner ’s
Manual specifies speed-rated tires, the replacement tires must have the
same or higher speed rating to maintain vehicle speed capability.
•If a replacement tire has a lower speed capability than that specified by
the vehicle manufacturer, the vehicle’s speed must be restricted to that
of the replacement tire. Vehicle handling could also be affected.
Consult the vehicle Owner ’s Manual or tire manufacturer for
recommendations.
•If tires with different speed ratings are used, it is recommended that
the lower-speed-rated tires always be placed on the front axle. This is
to prevent a potential oversteer condition.
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on the front axle. Only if studded winter/snow tires are installed on all
wheel positions of a vehicle will optimum handling characteristics be
achieved.
WARNING!
Installing only two studded winter/snow tires on the front axle of
any vehicle (including front-wheel-drive vehicles) without studded
winter/snow tires on the rear axle can cause adverse vehicle
handling characteristics. This can result in a loss of vehicle control,
which could cause serious personal injury or death.
mNOTICE!
In some cases, the vehicle manufacturer may specifically advise against
replacing fewer than all four tires. Always check and follow the
recommendations in the vehicle Owner’s Manual. For 4WD and AWD
vehicles, even small differences in outside diameter may cause drivetrain
damage or mechanical malfunction.
REPLACING TWO TIRES
•When a pair of replacement tires is selected in the same size and
construction as those on the vehicle, the two newer tires must be
installed on the rear axle and must be of equal or higher speed rating
than the front tires. Generally, new tires with deeper tread will provide
better grip and evacuate water more effectively, which is important as
a driver approaches hydroplaning situations. Placing greater traction
on the rear axle on wet surfaces is necessary to prevent a possible
oversteer condition and loss of vehicle stability.
•When two new tires have been installed onto the rear axle positions,
they are to be kept on the rear but rotated from side to side. This is
recommended after installing two new tires to the rear position, or if
you discover significant tread depth differences between the front and
rear positions during rotation intervals.
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REPLACING ONE TIRE
•Replacing a single tire on a vehicle can have an adverse effect on
suspension systems, gear ratios, transmission, and tire treadwear.
•If single tire replacement is unavoidable, it is recommended that the
single new tire be paired with the tire that has the deepest tread and
both be placed on the rear axle. Placing greater traction on the rear axle
on wet surfaces is necessary to prevent a possible oversteer condition
and loss of vehicle stability.
WHEEL ALIGNMENT AND BALANCING
•Proper wheel alignment and balance are very important consider-
ations for safety and getting the maximum mileage from your tires.
You need to check how your tires are wearing at least once a month.
•Your vehicle may be out of alignment if your tires are wearing
unevenly, such as when the inside shoulder of the tire is wearing faster
than the rest of the tread. This condition not only shortens the life of
your tires, it adversely affects the handling characteristics of your
vehicle, which could be dangerous. If your tires show irregular wear,
have your vehicle’s alignment checked immediately.
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B. Water Depth – The deeper the water, the sooner your tires will lose
traction. Even thin water layers can create sufficient lubrication to
cause traction loss at low speeds, depending on road conditions.
C. Tire Tread Depth – As your tires wear down, their decreased ability
to resist hydroplaning can result in a complete loss of traction and
vehicle control. You should always reduce your speed with con-
sideration for the traffic around you.
•Driving on ice and snow – Your all-season tires were designed to
provide higher levels of snow traction compared to non-all- season
tires. You have all-season tires if you find letters “M&S” are molded
into the sidewall near the bead. These letters mean “Mud and Snow.”
Tires designed for use in severe snow conditions generally have tread
patterns, structure, and materials for giving superior performance.
These tires are marked with the “M&S” designation plus a mountain/
snowflake symbol
. Even the best all-season tires will not provide
acceptable levels of traction if you drive too fast in snow or ice
conditions and if you do not allow more stopping distance on icy roads
compared to dry road surfaces. Your ability to safely maneuver your
vehicle in snow or ice conditions is considerably reduced if your tires
are too worn to provide adequate road grip.
SAFE USE OF TEMPORARY SPARE TIRES
WARNING!
The spare tire your car is equipped with may be of a different size
and construction from the other tires on your vehicle. When using
any temporary type spare tire, be sure to follow the vehicle
manufacturer ’s instructions. Failure to observe recommended
precautions could lead to erratic vehicle behavior and/or tire
damage, possibly resulting in an accident and serious personal
injury or death.
•The temporary spare tire is designed for temporary use only. It must
not be used continuously as a standard tire. The temporary spare tire
should be returned to the trunk as soon as it is convenient to have your
standard tire repaired or replaced.
•The temporary spare tire should not be used for speeds exceeding
50 mph.
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