2011 Acura MDX tire size

It is best to replace all four tires at
the same time. If that is not possible
or necessary, replace the two front
tires or two rear tires as a pair.
Replacing just one tire can seriously
affect your vehicle's handling.
If you ever replace a wheel, make
sure that the wheel's specifications
match those of the original wheels.
Also be sure you use only TPMS
specific wheels. If you do not, the tire
pressure monitoring system will not
work.
Replacement wheels are available at
your dealer.
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.
Wheel and Tire Specifications
Wheel:
MDX, Technology Package, and U.S. Technology Package with Entertainment
models18 x 8 J (TPMS)U.S. Advance Package, AdvancePackage with Entertainment, andCanadian Elite Package models19 ꭦ8ꀨ J (TPMS) Tires:
MDX, Technology Package, and U.S.
Technology Package with EntertainmentmodelsP255/55R18 104HU.S. Advance Package, AdvancePackage with Entertainment, andCanadian Elite Package modelsP255/50R19 103H
See page 574 for information about
DOT Tire Quality Grading, and page
576 for tire size and labeling
information.
Winter Driving
Tires marked ‘‘M ＋ S’’ or ‘‘All
Season ’’on the sidewall have an all-
weather tread design suitable for
most winter driving conditions.
For the best performance in snowy
or icy conditions, you should install
snow tires or tire chains. They may
be required by local laws under
certain conditions.
CONTINUED
Tires
539
Maintenance
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Snow Tires
If you mount snow tires on your
vehicle, make sure they are radial
tires of the same size and load range
as the original tires. Mount snow
tires on all four wheels. The traction
provided by snow tires on dry roads
may be lower than your original tires.
Check with the tire dealer for
maximum speed recommendations.
Tire Chains
Mount tire chains on your tires when
required by driving conditions or
local laws. Install them only on the
front tires.
Because your vehicle has limited tire
clearance, Acura strongly
recommends using the chains listed
below.
SCC Super Z-6＃SC 435 When installing chains, follow the
manufacturer's instructions and
mount them as tightly as you can.
Drive slowly with chains installed. If
you hear them contacting the body
or chassis, stop and investigate.
Make sure the chains are installed
tightly, and that they are not
contacting the brake lines or
suspension. Remove the chains as
soon as you start driving on cleared
roads.
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
owner's manual 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.
Wheels
Clean the wheels as you would the
rest of the exterior. Wash them with
the same solution, and rinse them
thoroughly.
Aluminum alloy wheels have a
protective clear-coat that keeps the
aluminum from corroding and
tarnishing. Cleaning the wheels with
harsh chemicals (including some
commercial wheel cleaners) or a stiff
brush can damage the clear-coat. To
clean the wheels, use a mild
detergent and a soft brush or sponge.
Tires54010/06/29 11:59:04 11 ACURA MDX MMC North America Owner's M 50 31STX640 enu

Use the compact spare tire as a
temporary replacement only. Get
your regular tire repaired or
replaced, and put it back on your
vehicle as soon as you can.
Check the inflation pressure of the
compact spare tire every time you
check the other tires. It should be
inflated to:
60 psi (420 kPa, 4.2 kgf/cm
2)
Follow these precautions:
●
Never exceed 50 mph (80 km/h).
●
This tire gives a harsher ride and
less traction on some road
surfaces. Use greater caution while
driving.
●
Do not mount snow chains on a
compact spare.
●
Do not use your compact spare tire
on another vehicle unless it is the
same make and model.
●
After the flat tire is replaced with
the spare tire, the low tire
pressure/TPMS indicator stays on.
After several miles (kilometers)
driving with the spare, this
indicator begins to flash, then
stays on again. You will also see a
‘‘ CHECK TPMS SYSTEM ’’
message on the multi-information
display (see page 452).
Replace the tire when you can see
the tread wear indicator bars. The
replacement should be the same size
and design tire, mounted on the
same wheel. The spare tire is not
designed to be mounted on a regular
wheel, and the spare wheel is not
designed for mounting a regular tire.INDICATOR LOCATION MARK
TREAD WEAR INDICATOR BAR
Compact Spare Tire54410/06/29 11:59:04 11 ACURA MDX MMC North America Owner's M 50 31STX640 enu

LightsHeadlights High 12 V －60 W (HB3)
Low
ꭧ
12 V －35 W (D2S)
Daytime running lights 12 V－60 W (HB3)
Front side marker lights 12 V－3CP
Front turn signal lights 12 V－21 W (Amber)
Parking lights 12 V－3CP
Fog lights 12 V－55 W (H11)
Rear turn signal lights 12 V－21 W
Rear side marker lights 12 V－3CP
Backup lights 12 V－18 W
License plate lights 12 V－3CP
Tailgate lights 12 V－5W
Vanity mirror lights 12 V－2W
Door lights 12 V－3.4 W
ꭧ : The low beam headlights are high voltage discharged type.
Replacement of a low beam headlight bulb should be performed by
your dealer.
Battery Capacity 12 V－65AH/5 HR
12 V －76AH/20 HR
Fuses
Interior See page 565 or the fuse label attached to the inside of the fuse box lid. Rear See page 564 or the fuse label attached
to the inside of the fuse box lid.
Under-hood See page 563 and 564 or the fuse box cover.
Engine Type Water-cooled, 4-stroke SOHC VTEC V6 gasoline engine
Bore x Stroke 3.54 x 3.78 in (90.0 x 96.0 mm)
Displacement 223.5 cu-in (3,664 cm
3)
Compression ratio 11.2 : 1
Spark plugs DENSO: NGK:SXU22HCR11S
ILZKR7B11S
Alignment Toe-in Front 0.00 in (0.0 mm)
Rear 0.08 in (2.0 mm)
Camber Front －0°30 ’
Rear －0°30 ’
Caster Front 4 ° 12 ’
Tires Size Front/Rear P255/55R18 104H
ꭧ1
P255/50R19 103H
ꭧ2
Spare T165/80D17 104M
Pressure Front/Rear 32 psi (220 kPa, 2.2 kgf/cm
2)
Spare 60 psi (420 kPa, 4.2 kgf/cm2)
ꭧ1: MDX, Technology Package, and U.S. Technology Package with Entertainment models
ꭧ2: U.S. Advance Package, Advance Package with Entertainment, and Canadian Elite Package models
Specifications
573
Technical Information
10/06/29 11:59:04 11 ACURA MDX MMC North America Owner's M 50 31STX640 enu

The tires that came on your vehicle
have a number of markings. Those
you should be aware of are described
below.
Tire SizeWhenever tires are replaced, they
should be replaced with tires of the
same size. Following is an example
of tire size with an explanation of
what each component means.P255/55R18 104H
P －Vehicle type (P indicates
passenger vehicle).
255 －Tire width in millimeters.
55 －Aspect ratio (the tire's
section height as a
percentage of its width).
R －Tire construction code (R
indicates radial).
18 －Rim diameter in inches. 104
－Load index (a numerical code
associated with the
maximum load the tire can
carry).
H －Speed symbol (an
alphabetical code indicating
the maximum speed rating).
Tire Identification Number (TIN)The tire identification number (TIN)
is a group of numbers and letters that
look like the following example. TIN
is located on the sidewall of the tire.
DOT B97R FW6X 2202
DOT －This indicates that the tire
meets all requirements of
the U.S. Department of
Transportation.
B97R －Manufacturer's
identification mark.
TIRE LABELING EXAMPLE
(1) Tire Size
(2) Tire Identification Number (TIN)
(3) Maximum Tire Pressure
(4) Maximum Tire Load (4)
(3) (2)(1)
(1)Tire Labeling57610/06/29 11:59:04 11 ACURA MDX MMC North America Owner's M 50 31STX640 enu

Each tire, including the spare (if
provided), should be checked
monthly when cold and inflated to
the inflation pressure recommended
by the vehicle manufacturer on the
vehicle placard or tire inflation
pressure label.
(If your vehicle has tires of a different
size than the size indicated on the
vehicle placard or tire inflation
pressure label, you should determine
the proper tire inflation pressure for
those tires.)As an added safety feature, your
vehicle has been equipped with a tire
pressure monitoring system (TPMS)
that illuminates a low tire pressure
telltale
when one or more of your tires is
significantly under-inflated.
Accordingly, when the low tire
pressure telltale illuminates, you
should stop and check your tires as
soon as possible, and inflate them to
the proper pressure.Driving on a significantly under-
inflated tire causes the tire to
overheat and can lead to tire failure.
Under-inflation also reduces fuel
efficiency and tire tread life, and may
affect the vehicle's handling and
stopping ability.
Please note that the TPMS is not a
substitute for proper tire
maintenance, and it is the driver's
responsibility to maintain correct tire
pressure, even if under-inflation has
not reached the level to trigger
illumination of the TPMS low tire
pressure telltale.
Tire Pressure Monitoring System (TPMS)
－Required Federal Explanation57810/06/29 11:59:04 11 ACURA MDX MMC North America Owner's M 50 31STX640 enu