four wheel drive Acura MDX 2015 Owner's Guide

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Tire Information
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 label or the specifications (see page 138) for the
specified pressure.
•  Underinflated tires wear unevenly, adversely affect handling and fuel economy, and are
more likely to fail from overheating.
•  Overinflated tires make your vehicle ride harshly, 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.
•  Measure the air pressure when tires are cold. This means the vehicle has been parked for
at least 3 hours, or driven less than 1 mile (1.6 km). If necessary, add or release air until
the specified pressure is reached. If checked when hot, tire pressure can be as much as
4-6 psi (30-40 kPa, 0.3-0.5 kgf/cm
2) higher than checked when cold.
•  At least once a month or before long trips, use a gauge to measure the pressure in all
tires, including the spare. Even tires in good condition can lose 1-2 psi
(10-20 kPa, 0.1-0.2 kgf/cm
2) per month.
Inspection Guidelines
Every time you inflate the tires, check for the following:
•  Any damage to tires, including bumps, bulges, cuts, splits, or cracks in the side or tread.
Remove any foreign objects and inspect for air leaks. Replace tires if you see fabric or
cord.
•  Uneven or excessive tread wear. Have a dealer check the wheel alignment.
•  Cracks or other damage around the valve stems.
Wear Indicators
The 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 low that the indicator is exposed, replace the tire. Worn out
tires have poor traction on wet roads.
Example of a wear
indicator mark
Tire and Loading Information LabelThe label attached to the driver’s doorjamb provides necessary tire and loading
information. Using tires that are excessively worn or improperly inflated can cause
a crash in which you can be seriously hurt or killed.
Follow all instructions in this owner’s guide regarding tire inflation
and maintenance.
Original
tire sizes
Number of
people your
vehicle can
carry Proper
cold tire
pressure
Total weight
your vehicle
can carry (do
not exceed)

Tire and Wheel r eplacement
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 certain vehicle systems to work incorrectly. It is best to replace all
four tires at the same time. If that isn’t possible, replace the front or rear tires in pairs.
If you change or replace a wheel, make sure that the wheel’s specifications match those
of the original wheels. Only use TPMS-specified wheels approved for your vehicle.
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 the Owner’s Manual.
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Tire Service Life
The life of your tires is dependent on many factors, including driving habits, road
conditions, vehicle loading, inflation pressure, 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,
including the spare, should be removed from service after 10 years from the date of
manufacture, regardless of their condition or state of wear.
Winter Tires
If driving on snowy or frozen roads, mount all season tires marked “M+S”, snow tires, or
tire chains; reduce speed; and maintain sufficient distance between vehicles when driving.
For winter tires, select the size and load ranges that are the same as the original tires, and
mount them to all four wheels.
Tire Chains
Install tire chains on the front tires only. Because your vehicle has limited tire clearance,
we strongly recommend using the following chains: Cable type: SCC Cable Chain ZT735.
Mount chains as tightly as you can, and make sure that they do not touch the brake lines
or suspension.
Using the wrong chains, or not properly installing chains, can damage the
brake lines and cause a crash in which you can be seriously injured or killed.
Follow all instructions in this guide regarding the selection and use of tire
chains.
Traction devices that are the wrong size or improperly installed can damage your
vehicle’s brake lines, suspension, body, and wheels. Stop driving if they are hitting
any part of the vehicle.
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Tire Labeling
The tires that came on your vehicle have a number of markings. Those you should
be aware of are described below.
Tire Identification Number (TIN)
The tire identification number (TIN)
is a group of numbers and letters that
look like the example shown. TIN is
located on the sidewall of the tire.
Glossary of Tire Terminology
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 – The maximum load that a tire 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 – 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) – The projections within the principal grooves
designed to give a visual indication of the degrees of wear of the tread.
DO T B97R FW6X 2209
DOT: This indicates that the tire meets all
requirements of the
U.S. Department of Transportation.
B97R: Manufacturer’s identication mark.
FW6X: Tire type code.
22 09: Date of manufacture.
YearWeek
Here is an example of what each marking
means:
215/70R16 100S
•  215: tire width in millimeters
•  70: aspect ratio (tire section height as a
percentage of its width)
•  R: tire construction code (radial)
•  16: rim diameter in inches
•  100: load index (code indicating maximum
load tire can carry)
•  S: speed symbol (code indicating
maximum speed rating)Tire size Tire
Identication
Number (TIN)
Maximum
tire load
Maximum
tire pressure
Tire size