2015 Acura RDX wheel size

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Braking
Slow down or stop your vehicle, and keep it from moving when parked.
Foot Brake
Press the brake pedal to slow down or stop
your vehicle from moving.
Parking BrakeKeep the vehicle from moving when it is parked.
To apply: Press the parking brake with your
foot.
To release: Press the brake pedal, then press
the parking brake until it releases. Brake Assist System
During hard or emergency braking, the system increases braking force. The brake
pedal may move slightly or make a noise; this is normal. Continue to hold the
brake pedal firmly down.
Anti-Lock Brake System (ABS)
During hard or emergency braking, the system rapidly pumps the brakes to
prevent wheel lockup and help you maintain steering control. The brake pedal
may pulsate slightly during ABS operation; this is normal. Do not pump the brake
pedal, and continue to hold it firmly down.
The ABS may not function correctly if you use an incorrect tire type and size.
Release the parking brake fully before driving. The rear brakes and axle can be
damaged if you drive with the parking brake applied.
NOTICE
NOTICE
Parking brake

Foot brake
Vehicle Stability Assist (VSA®), aka Electronic Stability Control
(ESC) System
Helps to stabilize the vehicle during cornering if the vehicle turns more or less
than what was intended. It assists in maintaining traction on slippery surfaces by
regulating engine output and selectively applying the brakes.
Turning VSA On or Off VSA is turned on every time you turn on the vehicle, even if you previously turned
it off. If you turn VSA off, your vehicle has normal braking and cornering ability,
but not VSA traction and stability enhancement.
Press and hold the VSA OFF button until you
hear a beep to turn VSA on or off. The VSA OFF
indicator appears when the system is off.
Traction control stops functioning, which may
make it easier when trying to free your vehicle
if it is stuck in mud or snow.
VSA OFF indicator
VSA OFF
button

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Changing a Flat Tire
If a  tire goes  flat while  driving, grasp  the steering wheel firmly, and brake gradually 
to reduce speed.  Stop in a safe place. Replace  the flat  tire with  the compact spare 
tire. Go to a dealer as soon as possible to have the full-size tire repaired or replaced.
Getting Ready to Change the Tire
Park the vehicle on a firm, level, non-slippery surface. Move the shift lever to Park
(P), and apply the parking brake. Turn the hazard warning lights on and turn the
vehicle off.
1. Open the tailgate. Turn on the cargo lights on
the inside of the tailgate, if necessary (see page
34).  Open  the cargo area  floor lid.
2. Take the wheel nut wrench and jack handle bar
out of the cargo area.
3. Unscrew the wing bolt, and remove the spacer
cone. Then, remove the spare tire.
4. Take the jack out of the spare tire area.
5. Loosen each wheel nut about one turn using the
wheel nut wrench.
Spare Tire
Tool Case
Wheel
Blocks
The tire to be replaced.Spare tire
Setting Up the Jack
1. Place the jack under the jacking point closest to
the tire to be changed.
2. Turn the end bracket (as shown in the image)
clockwise until the top of the jack contacts the
jacking point. Make sure that the jacking point
tab is resting in the jack notch.
3. Raise the vehicle, using the jack handle bar and
the jack handle, until the tire is off the ground.
The following instructions must be followed to use the jack safely:
•  Do not use the jack with people or luggage in the vehicle.
•  Use the jack provided in your vehicle. Other jacks may not support the weight
(“load”) or fit the jacking point.
•  Do not use while the engine is running.
•  Use only where the ground is firm and level.
•  Use only at the jacking points.
•  Do not get in the vehicle while using the jack.
•  Do not put anything on top of or underneath the jack.
The vehicle can easily roll off the jack, seriously injuring anyone underneath.
Follow the directions for changing a tire exactly, and never get under the
vehicle when it is supported only by the jack.
WARNING
Jack
handle bar
Wheel nut wrench as
jack handle

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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
120) 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 Label
The 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 manual regarding  tire inflation 
and maintenance.
WARNING
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 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 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.
WARNING

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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. For tire chains,
install them on the front tires only.
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.
WARNING
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.
NOTICE
Tire Labeling
The tires that came on your vehicle have a number of markings. Those you
should be aware of are described below.
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.
Tire Identification Number (TIN)
The tire identification number (TIN)
is a group of numbers and letters
that look like the example below. TIN
is located on the sidewall of the tire.
DO T B97R FW6X 2209DOT: 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.
Year
Week
Tire sizeTire
identication number (TIN)
Maximum
tire load
Maximum
tire pressure
Tire size
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)

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Tire Pressure Monitoring System (TPMS) - Required Federal
Explanation
U.S. models only
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.
Your vehicle has also been equipped with a TPMS malfunction indicator to
indicate when the system is not operating properly. The TPMS malfunction
indicator is combined with the low tire pressure telltale. When the system
detects a malfunction,  the telltale  will flash  for approximately  one minute 
and then remain continuously illuminated. This sequence will continue
upon subsequent vehicle start-ups as long as the malfunction exists.
When the malfunction indicator is illuminated, the system may not be able
to detect or signal low tire pressure as intended.
TPMS malfunctions may occur for a variety of reasons, including the
installation of replacement or alternate tires or wheels on the vehicle that
prevent the TPMS from functioning properly.
Always check the TPMS malfunction telltale after replacing one or more
tires or wheels on your vehicle to ensure that the replacement or alternate
tires and wheels allow the TPMS to continue to function properly.
Testing of Readiness Codes
Your vehicle has “Readiness Codes” as part of the onboard self-diagnostic system.
Some states refer to these codes as a test to see if your vehicle’s emissions
components are working properly. The codes may not be read if you go through the
testing just after the battery has gone dead or been disconnected.
To check if they are set, turn the vehicle on without starting the engine. The
malfunction indicator lamp will come on for several seconds. If it goes off, the
readiness codes are set. If it blinks five times, the readiness codes are not set.
If you are required to have your vehicle tested before the readiness codes are set,
prepare the vehicle for retesting by doing the following:
1. Fill the gas tank to approximately 3/4 full.
2. Park the vehicle and leave the engine off for 6 hours or more.
3. Make sure the ambient temperature is between 40°F and 95°F (4°C and 35°C).
4. Start the engine without touching the accelerator pedal, and let it idle for 20
seconds.
5. Keep the vehicle in Park (P). Increase the engine speed to 2,000 rpm, and hold it
there for about 3 minutes.
6. Let the engine idle with your foot off the accelerator for 20 seconds.
7. Select a nearby, lightly traveled major highway where you can maintain a speed
of 50 to 60 mph (80 to 97 km/h) for at least 20 minutes. Drive on the highway
with the vehicle in Drive. Do not use cruise control. When traffic allows, drive
for 90 seconds without using the accelerator pedal. (Vehicle speed may vary
slightly; this is OK.) If you cannot do this for a continuous 90 seconds because of
traffic conditions, drive for at least 30 seconds, then repeat two more times (for
a total of 90 seconds).
8. Drive in city/suburban traffic for at least 10 minutes. When traffic conditions
allow, let the vehicle coast for several seconds without using the accelerator
pedal or the brake pedal.
9. Park the vehicle and leave the engine off for 30 minutes.
The readiness codes are erased when the battery is disconnected, and set again
only after several days of driving under a variety of conditions.
If a testing facility determines that the readiness codes are not set, you may be
requested to return at a later date to complete the test, or see your dealer.=