tire pressure ACURA NSX 2020 Owner's Manual

407
Maintenance
Checking and Maintaining Tires
Checking Tires
To safely operate your vehicle, your tires must be of the proper type and size, in
good condition with adequate tread, and properly inflated.
■ Inflation guidelines
Properly inflated tires provide the best combination of handling, tread life, and
comfort. Refer to the driver’s doorjamb labe l or specifications page for the specified
pressure.
Underinflated tires wear unev enly, adversely affect handling and fuel economy, and
are more likely to fail from overheating.
Overinflated tires make your vehicle ride ha rshly, are more prone to road hazards,
and wear unevenly.
Every day before you drive, look at each of the tires. If one looks lower than the
others, check the pressure with a tire gauge.
At least once a month or before long trips, use a gauge to measure the pressure in all
tires. Even tires in good condition can lose 1 – 2 psi (10 – 20 kPa, 0.1 – 0.2 kgf/cm2
)
per month.
■ Inspection guidelines
Every time you check inflation, also examine the tires and valve stems. Look for: • Bumps or bulges on the side or in the tread. Replace the tire if you find any cuts,
splits, or cracks in the side of the tire . Replace it if you see fabric or cord.
• Remove any foreign objects and inspect for air leaks.
• Uneven tread wear. Have an authorized Acura NSX dealer check the wheel
alignment.
• Excessive tread wear.
2 Wear Indicators P. 412
• Cracks or other damage around valve stem.
1Checking Tires
Measure the air pressure when tires are cold. This
means the vehicle has been parked for at least three
hours, or driven less than 1 mile (1.6 km). If necessary, add or releas e air until the specified
pressure is reached.
If checked when hot, tire pressure can be as much as 4 – 6 psi (30 – 40 kPa, 0.3 – 0.4 kgf/cm 2
) higher than
if checked when cold.
Have an authorized Acura NSX dealer check the tires
if you feel a consistent vi bration while driving. New
tires and any that have be en removed and reinstalled
should be properly balanced.
3WARNING
Using tires that are excessively worn or
improperly inflated can cause a crash in
which you can be seriously hurt or killed.
Follow all instruction s in this owner’s
manual regarding ti re inflation and
maintenance.
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408
uuChecking and Maintaining TiresuTire and Loading Information Label
Maintenance
Tire and Loading Information Label
The label attached to the driver’s doorjamb provides necessary tire and loading
information.
Tire Labeling
The tires that came on your vehicle have a
number of markings. Those you should be
aware of are described as follows.
Whenever tires are replaced, they should be replaced with tires of the same size,
load index and speed rating.
1Tire and Loading Information Label The tire and loading informat ion label attached to the
driver’s doorjamb contains:
aThe number of people your vehicle can carry.bThe total weight your ve hicle can carry. Do not
exceed this weight.
cThe original tire sizes for front, rear, and spare, if
equipped.
dThe proper cold tire pressure for front, rear, and
spare, if equipped.
Label
Example
Example Tire Size
Tire Identification
Number (TIN)
Maximum
Tire Load
Maximum
Tire Pressure
Tire Size
■Tire Sizes
1Tire Sizes
Following is an example of tire size with an
explanation of what each component means.
245/40R19 98W
245: Tire width in millimeters.40: Aspect ratio (the tire’s section height as a
percentage of its width).
R: Tire construction code (R indicates radial).
19: Rim diameter in inches.
98: Load index (a numerical code associated with the
maximum load the tire can carry).
W: Speed symbol (an alphabe tical code indicating the
maximum speed rating).
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409
uuChecking and Maintaining TiresuTire Labeling
Maintenance
The tire identification number (TIN) is a group of numbers and letters that look like
the example in the side column. TIN is located on the sidewall of the tire.
Cold Tire Pressure – The tire air pressure when the vehicle has been parked for at
least three hours or driven less than 1 mile (1.6 km). Load Rating – Means the maximum load that a ti re is rated to carry for a given
inflation pressure.
Maximum Inflation Pressure – The maximum tire air pressure that the tire can
hold.
Maximum Load Rating – Means the load rating for a tire at the maximum
permissible inflation pressure for that tire.
Recommended Inflation Pressure – The cold tire inflation pressure recommended
by the manufacturer.
Treadwear Indicators (TWI) – Means the projections within the principal grooves
designed to give a visual indication of the degrees of wear of the tread.
■Tire Identification Number (TIN)
■Glossary of Tire Terminology
1Tire Identification Number (TIN)
DOT B97R FW6X 2209
DOT: This indicates that the tire meets all
requirements of the U.S. Department of
Transportation.
B97R: Manufacturer’s identification mark.
FW6X: Tire type code.
22 09: Date of manufacture.
Year
Week
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412
uuChecking and Maintaining TiresuWear Indicators
Maintenance
Wear IndicatorsThe groove where the wear indicator is
located is 1/16 inch (1.6 mm) shallower than
elsewhere on the tire. If the tread has worn so
that the indicator is exposed, replace the tire.
Worn out tires have poor traction on wet roads.
Tire Service Life
The life of your tires is dependent on many factors, including driving habits, road
conditions, vehicle loading, inflation pre ssure, maintenance history, speed, and
environmental conditions (even when the tires are not in use).
In addition to regular inspections and inflation pressure maintenance, it is
recommended that you have annual inspections performed once the tires reach five
years old. All tires should be removed fro m service after 10 years from the date of
manufacture, regardless of their condition or state of wear.
1Checking Tires
High speed driving
We recommend that you do not drive on public roads faster than the posted sp eed limits and conditions
allow. If you intend to driv e at sustained high speeds
(over 168 mph or 270 km/h), such as at a track or
other closed course venue , adjust the cold tire
pressures as shown below to avoid excessive heat
build up and sudden tire failure.
Tire SizeFront:
245/35ZR19 (93Y)Rear:
305/30ZR20 (103Y)
Pressure Front: 38 psi (260 kPa, 2.6 kgf/cm 2
)
Rear:
38 psi (260 kPa, 2.6 kgf/cm 2
)
Example of a Wear
Indicator mark
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413
uuChecking and Maintaining TiresuTire and Wheel Replacement
Maintenance
Tire and Wheel Replacement
Replace your tires with radials of the same size, load range, speed rating, and
maximum cold tire pressure rating (as shown on the tire’s sidewall). Using tires of a
different size or construction can cause ce rtain vehicle systems such as the ABS and
Vehicle Stability Assist TM
(VSA ®) system to work incorrectly.
It is best to replace all four tires at the same time.
If you replace a wheel, only use TPMS spec ified wheels approved for your vehicle.
Make sure that the wheel’s specificati ons match those of the original wheels.
1Tire and Wheel Replacement
3WARNING
Installing improper tires on your vehicle can
affect handling and stability. This can cause
a crash in which you can be seriously hurt or killed.
Always use the size and type of tires
recommended in this owner’s manual.
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433
Continued
Handling the Unexpected
If a Tire Goes Flat
Temporarily Repairing a Flat Tire
If the tire has a large cut or is otherwise
severely damaged, you will need to have the
vehicle towed. If the tire only has a sma ll puncture, from a small nail for instance,
you can use the temporary tire repair kit so that you can drive to the nearest service
station for a more permanent repair.
If a tire goes flat while driving, grasp the steering wheel firmly, and brake gradually
to reduce speed. Then stop in a safe place.1. Park the vehicle on a firm, level, and non-slippery surface. Apply the parking
brake.
2. Put the transmission into
(P .
3. Turn on the hazard warning lights an d set the power mode to VEHICLE OFF.
1Temporarily Repairing a Flat Tire
The kit should not be used in the following situations.
Instead, contact an authorized Acura NSX dealer or a
roadside assistant to have the vehicle towed.
• The tire sealant has expired.
• More than one tire is punctured.
• The puncture or cut is larger than 3/16 inch (4 mm).
• The tire side wall is da maged or the puncture is
outside the contact area.
• Damage has been caused by driving with the tire
extremely under inflated.
• The tire bead is no longer seated.
• The rim is damaged.
Do not remove a nail or screw that punctured the
tire. If you remove it from the tire, you may not be
able to repair the puncture using the kit.
NOTICE
Do not use a puncture-repairing agent other than the
one provided in the kit that came with your vehicle. If
a different agent is used, you may permanently
damage the tire pressure sensor.
When the puncture is:Kit Use
Smaller than 3/16 inch
(4 mm)Yes
Larger than 3/16 inch (4 mm)No
Contact
Area
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uuIf a Tire Goes FlatuTemporarily Repairing a Flat Tire
436
Handling the Unexpected
6. Plug in the compressor to the accessory
power socket.
uBe careful not to pinch the cord in a
door or window.
2 Accessory Power Socket P. 153
7. Turn the power system on.
uKeep the power system on while
injecting sealant and air.
2 Carbon Monoxide Gas P. 67
8. Turn the air compressor on to inflate the
tire.
uThe compressor starts injecting sealant and air into the tire.
9. After the air pressure reaches 32 psi (220
kPa), turn off the compressor.
1Injecting Sealant and Air
NOTICE
Do not operate the temporary tire repair kit compressor
for more than 15 minutes. The compressor can overheat
and become permanently damaged.
Until the sealant injection is complete, the pressure
shown on the pressure gauge will appear higher than
actual. After the sealant injection is complete the
pressure will drop and then begi n to rise again as the tire
is inflated with air. This is normal. To accurately measure
the air pressure using the gauge, turn the air compressor
off only after the sealan t injection is complete.
If the required air pressure is not reached within 15
minutes, the tire may be too severely damaged for
the kit to provide the necessa ry seal and your vehicle
will need to be towed.
See an authorized Acura NSX dealer for a replacement
sealant bottle and proper disposal of an empty bottle.
3WARNING
Running the engine with the vehicle in an
enclosed or even partly enclosed area can
cause a rapid build-up of toxic carbon
monoxide.
Breathing this colorless, odorless gas can
cause unconsciousness and even death.
Only run the engine to power the air
compressor with th e vehicle outdoors.
Air Compressor Switch
OFF
ON
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437
uuIf a Tire Goes FlatuTemporarily Repairing a Flat Tire
Continued
Handling the Unexpected
10.Unplug the kit from the accessory power socket.
11. Unscrew the sealant/ai r hose from the tire
valve stem. Reinstall the valve cap.
12. Push the deflation button until the gauge
returns 0 psi (0 kPa).
13. Apply the repair notification label to the
flat surface of the wheel.
uThe wheel surface must be clean to
ensure the label adheres properly.
Deflation Button Air Pressure Gauge
Repair Notification Label
U.S.
Canada
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439
uuIf a Tire Goes FlatuTemporarily Repairing a Flat Tire
Continued
Handling the Unexpected
4.Recheck the air pressure using the gauge
on the air compressor.
uDo not turn the air compressor on to
check the pressure.
5. If the air pressure is:
• Less than 19 psi (130 kPa):
Do not add air or continue driving. The
leak is too severe. Call for help and have
your vehicle towed.
2 Emergency Towing P. 462
• 32 psi (220 kPa) or more:
Continue driving for another five
minutes or until you reach the nearest
service station if less than five minutes
away. Do not exceed 50 mph (80 km/h).
uStop and check the air pressure again. If
the air pressure does not go down after
the five minute drive, you do not need to
check the pressure any more. Drive to
the nearest service station to fix or
replace the tire.
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uuIf a Tire Goes FlatuTemporarily Repairing a Flat Tire
440
Handling the Unexpected
• Greater than 19 psi (130 kPa), but less than
32 psi (220 kPa):
Turn the air compressor on to inflate the
tire until the tire pressure reaches 32 psi (220 kPa).
2 Injecting Sealant and Air P. 435
Then drive carefully for five more minutes
or until you reach the nearest service station
if less than five minutes away.
Do not exceed 50 mph (80 km/h).
uYou should repeat this procedure as long
as the air pressure is within this range.
1Distributing the Sealant in the Tire
Refer to the driver’s doorja mb label for the specified
pressure.
3WARNING
Running the engine with the vehicle in an
enclosed or even partly enclosed area can
cause a rapid build-up of toxic carbon
monoxide.
Breathing this colorless, odorless gas can
cause unconsciousness and even death.
Only run the engine to power the air
compressor with th e vehicle outdoors.
Deflation ButtonAir Pressure Gauge
Air Compressor Switch
OFF
ON
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