2008 Acura RL tire size

The radar sensor may not always
scan as intended. Here are two
examples:Thetiresarenotcorrectly
maintained. Always make sure the
tire pressures are correct (see
page ), and that the tires are
the correct size and in good
condition (see Tires on page ). Your vehicle is tilted because of a
heavy load in the rear or from
modif ications to the suspension.
Do not overload your vehicle (see
Carrying Cargo on page ), and
do not make any modif ications to
the suspension (see Accessories
and Modif ications on page ). 339
337
419 419
Collision Mitigation Brake System (CMBS)
Driving
363
When the CMBS is on, the radar sensor
constantly scans f or vehicles ahead of
you. This means that driving on a road
with a f ew or no vehicles could cause a
CHECK CMBS RADAR SENSOR
message to appear on the multi-
inf ormation display. This is normal
and not a cause f or concern.
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2008 RL

The CMBS will automatically
recover when these conditions are
improved.
Any of the conditions below can
cause the CMBS to shut of f . When
the system shuts off, the CMBS
indicator in the instrument panel
comes on, and a CHECK CMBS
SYSTEM message appears on the
multi-inf ormation display f or about 5
seconds.
An abnormal tire condition is
detected (wrong tire size, f lat tire,
etc.).
Extended of f -road or mountainous
driving.
Driving your vehicle with the
parking brake applied.
Driving your vehicle in bad
weather(rain,fog,snow,etc.).
A dirty emblem on the f ront grille.
When you turn the ignition switch to
the ON (II) position, the CMBS is
turned on if it was on previously.
Collision Mitigation Brake System (CMBS)
Automatic Shut Of f
Driving
365
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Driving with varying tire or wheel
sizes may cause the VSA to
malf unction. When replacing tires,
make sure they are of the same size
and type as your original tires (see
page ).
In certain unusual conditions when
your vehicle gets stuck in shallow
mud or f resh snow, it may be easier
to free it with the VSA temporarily
switched of f . When the VSA system
is of f , the traction control system is
alsooff.Youshouldonlyattemptto
f ree your vehicle with the VSA of f if
you are not able to f ree it when the
VSA is on.
Immediately af ter f reeing your
vehicle, be sure to switch the VSA on
again. We do not recommend driving
your vehicle with the VSA and
traction control systems switched off.
This switch is at the right side of the
lef t vent. Press it to turn VSA on and
off.
When VSA is off, the VSA activation
indicator comes on as a reminder.
VSA is turned on every time you
start the engine, even if you turned it
off the last time you drove the
vehicle.If you install winter tires, make sure
they are the same size as those that
were originally supplied with your
vehicle. Exercise the same caution
during winter driving as you would if
your vehicle was not equipped with
VSA.
423
Vehicle Stability Assist (VSA) System
VSA and Tire Sizes
VSA Of f Switch
378
VSA OFF SWITCH
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CONT INUED
Keeping the tires properly inf lated
provides the best combination of
handling, tread lif e, and riding
comf ort.Underinf lated tires wear unevenly,
adversely af f ect handling and f uel
economy, and are more likely to
fail from being overheated.
Overinf lated tires can make your
vehicleridemoreharshly,are
more prone to damage f rom road
hazards, and wear unevenly.
Thetirepressuremonitoringsystem
(TPMS)willwarnyouwhenatire
pressure is low. See page f or
inf ormation on the TPMS.
The f ollowing pages give more
detailed inf ormation on how to take
care of your tires and what to do
when they need to be replaced.
To saf ely operate your vehicle, your
tires must be the proper type and
size, in good condition with adequate
tread, and correctly inf lated.
Clean the wheels as you would the
rest of the exterior. Wash them with
thesamesolution,andrinsethem
thoroughly.
Aluminum alloy wheels have a
protective clear-coat that keeps the
aluminum f rom corroding and
tarnishing. Cleaning the wheels with
harsh chemicals (including some
commercial wheel cleaners) or a stif f
brush can damage the clear-coat. To
clean the wheels, use a mild
detergent and a sof t brush or sponge.
371
Inf lation Guidelines
Tires
Wheels
Wheels, Tires
Maint enance
419
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.
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The following charts show the
recommended cold tire pressures f or
most normal and high-speed driving
conditions.For convenience, the recommended
tire sizes and cold tire pressures are
on a label on the driver’s doorjamb.
For additional technical inf ormation
about your tires, see page .Every time you check inf lation, you
should also examine the tires f or
damage, f oreign objects, and wear.
Youshouldlookfor:
Bumpsorbulgesinthetreador
side of the tire. Replace the tire if
youfindeitherof theseconditions.
Cuts, splits, or cracks in the side
of the tire. Replace the tire if you
can see f abric or cord.
Excessive tread wear.
466
Tire Size/Type
Compact Spare Cold Tire Pressure
Front
Rear Tire Size Cold Tire Pressure for
Normal Driving
Front:
Rear:
CONT INUED
On models with the Michelin PAX systemRecommended Tire Pressures Tire Inspection
Tires
Maint enance
421
P245/50R17 98V
T155/70D17 110M 32 psi (220 kPa , 2.2 kgf/cm
)
60 psi (420 kPa , 4.2 kgf/cm
)
30 psi (210 kPa , 2.1 kgf/cm
) 32 psi (220 kPa ,
2.2 kgf/cm
)
30 psi (210 kPa , 2.1 kgf/cm
)
245-680R460A
102V
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In addition to proper inf lation,
correct wheel alignment helps to
decrease tire wear. If you f ind a tire
is worn unevenly, have your dealer
check the wheel alignment.
Have your dealer check the tires if
you f eel a consistent vibration while
driving. A tire should always be
rebalanced if it is removed f rom the
wheel. When you have new tires
installed, make sure they are
balanced. This increases riding
comf ort and tire lif e. For best results,
have the installer perform a dynamic
balance.Replace your tires with radial tires of
the same size, load range, speed
rating, and maximum cold tire
pressure rating (as shown on the
tire’s sidewall).
Mixing radial and bias-ply tires on
your vehicle can reduce braking
ability, traction, and steering
accuracy. Using tires of a dif f erent
size or construction can cause the
ABS and vehicle stability assist
system (VSA) to work inconsistently.
To help increase tire lif e and
distribute wear more evenly, rotate
the tires according to the
maintenance messages displayed on
the multi-information display. Move
the tires to the positions shown in
the illustration each time they are
rotated. If you purchase directional
tires, rotate only front-to-back.
When the tires are rotated, make
sure the air pressures are checked. Your vehicle is not designed f or
Michelin PAX system wheels or tires.
Use only the wheels and tires
designated in this owner’s manual.
Never mix conventional wheels or
tires with PAX system wheels or
tires.
Vehicles without the Michelin PAX
System
Tires
T ire Maintenance Replacing T ires and Wheels Tire Rotation
Maint enance
423
(For Non-directional
Tires and Wheels)(For Directional
Tires and Wheels)
Front Front
Improper wheel weights can damage
your vehicle’s aluminum wheels. Use
only Acura wheel weights f or balancing.
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´
µ 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 perf ormance in snowy
or icy conditions, you should install
snow tires or tire chains. They may
be required by local laws under
certain conditions.
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 f our wheels. The traction
provided by snow tires on dry roads
maybelowerthanyouroriginaltires.
Check with the tire dealer f or
maximum speed recommendations.
Wheels:
Tires:
See page f or DOT tire quality
grading inf ormation, and page
f or tire size explanation.
It is best to replace all f our tires at
thesametime.If thatisnotpossible
or necessary, replace the two f ront
tires or two rear tires as a pair.
Replacing just one tire can seriously
af f ect your vehicle’s handling.
If you ever need to replace a wheel,
make sure the wheel’s specif ications
match those of the original wheel
that came on your vehicle.
Replacement wheels are available at
your Acura dealer.
There are no snow tires compatible
with the PAX system.
466
468
On models with the Michelin PAX system
On models with the Michelin PAXsystem
Tires
Winter Driving
Wheels and T ires
Snow T ires
424
17x8.0JAL(TPMS)
235 460A (TPMS)
P245/50R17 98V
245-680R460A 102V
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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When installing cables, f ollow the
manuf acturer’s instructions, and
mount them as tight as you can.
Make sure they are not contacting
the brake lines or suspension. Drive
slowly with them installed. If you
hear them coming into contact with
the body or chassis, stop and
investigate. Remove them as soon as
you begin driving on cleared roads.
Mount tire chains on your tires when
required by driving conditions or
local laws. Install them only on the
f ront tires.
Because your vehicle has limited tire
clearance, Acura strongly
recommends using the chain listed
below, made by Security Chain
Company (SCC).
Tire chains cannot be used with a
flat front tire. If a front tire goes flat
when a tire chain is installed on it,
remove the chain, and f ollow the
precautions described under
Michelin PAX System (see page
).
Cable-type: SCC Radial Chain
CH2612T
426
Tires
T ire Chains
Maint enance
425
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.
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