WHEEL AND TIRE SYSTEM
WT
  1. General Description
  2. Tire and Wheel
  3. Full Wheel Cap
  4. Temporary Tire
  5. Tire Pressure Monitoring System
  6. General Diagnostic Table
WHEEL AND TIRE SYSTEM > General Description　
SPECIFICATION
1. NOTE

(a)

Inset

(b)

P.C.D.
 

Size and inflation pressure of the standard equipment tire, temporary tire and appropriate tire for equipment are described on the “Tire inflation pressure” label attached to the body side of the driver’s door.

2. STANDARD EQUIPMENT TIRE & WHEEL

Tire size

Wheel size

Inset

mm (in)

P.C.D.

mm (in)

Tire inflation pressure kPa

(kgf/cm2, psi)

Front wheel

Rear wheel

225/60R17 99H

17 7J

48 (1.89)

114.3 (4.5)

230 (2.3, 33)

220 (2.2, 32)

225/55R18 98H

18 7J

48 (1.89)

114.3 (4.5)

240 (2.4, 35)

230 (2.3, 33)
3. TEMPORARY TIRE & WHEEL

Tire size

Wheel size

Inset

mm (in)

P.C.D.

mm (in)

Tire inflation pressure kPa

(kgf/cm2, psi)

Front wheel

Rear wheel

T145/80D17 107M

17 4T

20 (0.79)

114.3 (4.5)

Not used

420 (4.2, 60)

185/65R17 90M

17 6J

43 (1.69)

114.3 (4.5)

Not used

290 (2.9, 42)
4. SERVICE DATA

Part

Axial runout

Radial runout

Steel wheel

1.5 mm (0.06in)

Alloy wheel

1 mm (0.04in)

Wheel balancing

Standard

Service limit

Dynamic unbalance

5 g (0.18 oz) or less
WHEEL AND TIRE SYSTEM > General Description　
COMPONENT

(1)

TPMS & keyless entry CM (model without keyless access with push button start system)

(4)

Transmitter (tire inflation pressure sensor)

Tightening torque: N·m (kgf-m, ft-lb)

(2)

TPMS CM (model with keyless access with push button start system)

(5)

Valve

T1:

1.4 (0.1, 1.0)

(3)

Screw

T2:

13 (1.3, 9.6)

(1)

TPMS & keyless entry CM (model without keyless access with push button start system)

(2)

TPMS CM (model with keyless access with push button start system)
WHEEL AND TIRE SYSTEM > General Description　
CAUTION

When performing service operation, refer to “Repair Contents” in “General Description”. REPAIR CONTENTS>Repair Contents

WHEEL AND TIRE SYSTEM > General Description　
PREPARATION TOOL
1. SPECIAL TOOL

ILLUSTRATION

TOOL NUMBER

DESCRIPTION

REMARKS

—

SUBARU SELECT MONITOR 4

Used for setting of each function and troubleshooting for electrical system.

 

For detailed operation procedures of Subaru Select Monitor 4, refer to “Help” of application.
2. GENERAL TOOL

TOOL NAME

REMARKS

Air pressure gauge

Used for measuring tire air pressure.

Circuit tester

Used for measuring resistance, voltage and current.

Dial gauge

Used for measuring wheel runout.

Magnet stand

Used for measuring wheel runout.

Transmitter registration tool

Used to register the transmitter ID.

Manufacturer: Latest model of ATEQ Corp. Or, use an ATEQ model with the updated software compatible with Generation6 transmitter.

 

For details of the software update, registration procedures and retailers, contact ATEQ in your country.

Wheel balancer

Used for adjusting wheel balance.

DST-i

Used together with Subaru Select Monitor 4.
WHEEL AND TIRE SYSTEM > Tire and Wheel　
REMOVAL
1.

Remove the hubcap. (Model with full hubcap) WHEEL AND TIRE SYSTEM>Full Wheel Cap>REMOVAL

2.

Lift up the vehicle.

3.

Remove the wheel nut.

4.

Remove the wheels.

 

When removing the wheels, be careful not to damage the hub bolts.

WHEEL AND TIRE SYSTEM > Tire and Wheel　
INSTALLATION
1.

Install the wheels to vehicle.

2.

Tighten the wheel nuts to the specified torque.

Tightening torque:

120 N·m (12.2kgf-m, 88.5ft-lb)

WHEEL AND TIRE SYSTEM > Tire and Wheel　
INSPECTION
1. TIRES
 

When replacing a tire, make sure to use tires of the same size, construction and load range as originally installed.

1.

Tire size and tire inflation pressure check WHEEL AND TIRE SYSTEM>General Description>SPECIFICATION

2.

Cracks, damage and wear check

3.

Tire runout check

(1)

Lift up the vehicle.

(2)

Slowly rotate the wheel to check rim “runout” using a dial gauge.

Preparation tool:

Dial gauge

Magnet stand

  • Alloy wheel

    Service limit:

    Axial and longitudinal runout: 1 mm (0.04in)

  • Steel wheel

    Service limit:

    Axial and longitudinal runout: 1.5 mm (0.06in)

(3)

After inspection, if the runout of the rim exceeds the limit, check the hub unit bearing.

(4)

If no defect is found in the hub unit bearing, replace the wheel.

2. TIRE ROTATION
 

Rotate tires periodically (10,000 km/6,000miles) in order to prolong life and to prevent uneven wear.

Rotate tires as shown in the figure depending on whether or not the direction of the tire rotation is specified.

  • When the direction of tire rotation is not specified

    (a)

    Front side of vehicle

  • When the direction of tire rotation is specified

    (a)

    Front side of vehicle
3. WHEEL BALANCING
1.

Using the wheel balancer, measure wheel balance.

2.

Adjust the wheel balancing.

 

  • Unbalance after adjusting the wheel balancing should be 5 g (0.18 oz) or less.

  • When using the adhesive type weight, degrease the surface where the adhesive type weight will be applied securely.

  • After applying the adhesive type weight, apply a force to the weight and attain full adhesion.

  • Using the knock-on type weight, check the size of the knock-on part.

    (a)

    Knock-on type weight for alloy wheel

    (b)

    Knock-on type weight for steel wheel

Service limit A:

Knock-on type weight for steel wheel: 2 mm (0.08in)

Knock-on type weight for alloy wheel: 5 mm (0.2in)

WHEEL AND TIRE SYSTEM > Full Wheel Cap　
REMOVAL

Remove the hubcap using your hands protected with gloves or the like.

 

The wheels may be damaged while removing the hubcaps, but the performance will not be impaired.

WHEEL AND TIRE SYSTEM > Full Wheel Cap　
INSTALLATION
1.

Align the valve with the valve hole (a) in the hubcap.

2.

Install the hubcap by lightly tapping the claw (b).

WHEEL AND TIRE SYSTEM > Full Wheel Cap　
INSPECTION

Check for damage on the hubcap.

WHEEL AND TIRE SYSTEM > Temporary Tire　
NOTE

“T-type” or “Temporary” tire for temporary use is equipped as a temporary tire.

 

  • The “T-type” or “Temporary” tire is only for temporary use. Replace with a standard equipment sized tire as soon as possible.

  • Do not use standard sized tire chains for “T-type” or “Temporary” tires. Because tire size is small, tire chains can not be installed properly and will damage the vehicle and tires if they are detached while driving.

  • Do not drive at a speed greater than 80 km/h (50 MPH).

  • Drive the vehicle as slowly as possible and avoid bumps on the road.

WHEEL AND TIRE SYSTEM > Temporary Tire　
REPLACEMENT

Refer to “Tire and Wheel” for removal and installation of the “T-type” or “Temporary” tire. WHEEL AND TIRE SYSTEM>Tire and Wheel

WHEEL AND TIRE SYSTEM > Temporary Tire　
INSPECTION

For inspection of the “T-type” or “Temporary” tire, refer to “Inspection” for standard equipment tire. WHEEL AND TIRE SYSTEM>Tire and Wheel>INSPECTION > TIRES

WHEEL AND TIRE SYSTEM > Tire Pressure Monitoring System　
WIRING DIAGRAM

Refer to “Tire Pressure Monitoring System” in the wiring diagram. WIRING SYSTEM>Tire Pressure Monitoring System>WIRING DIAGRAM

WHEEL AND TIRE SYSTEM > Tire Pressure Monitoring System　
REMOVAL
1. TRANSMITTER (TIRE INFLATION PRESSURE SENSOR)
1.

Remove the wheels from the vehicle. WHEEL AND TIRE SYSTEM>Tire and Wheel>REMOVAL

2.

Remove the tires from wheels.

 

Use a tire changer when removing the tire from the wheel.

3.

Loosen the screw to remove the transmitter from the valve stem.

 

Do not reuse the valve and screw.

Replace the valve and screw with a new part even when reusing transmitter.

(a)

Wheel

(b)

Transmitter

(c)

Screw

(d)

Valve
4.

Remove the valve from the wheel.

2. TPMS & KEYLESS ENTRY CM
 
3. TPMS CM
 

For removal procedures of the TPMS CM for models with keyless access with push button start system, refer to the “SECURITY AND LOCKS” section. SECURITY AND LOCKS>Keyless Entry Control Module>REMOVAL

WHEEL AND TIRE SYSTEM > Tire Pressure Monitoring System　
INSTALLATION
1. TRANSMITTER (TIRE INFLATION PRESSURE SENSOR)
 

When installing, use a new transmitter or replace the valve and screw with new parts.

1.

Replace the valve and screw with a new part when reusing transmitter.

(a)

Screw

(b)

Transmitter (tire inflation pressure sensor)

(c)

Valve

Tightening torque:

1.4N·m (0.1kgf-m, 1.0 ft-lb)

2.

Install the transmitter to the wheel by aligning it with valve hole.

 

When using the jig that pulls the valve cap by hooking its neck part, use another short-type cap.

3.

Install the tires to wheels.

 

  • Use a tire changer when installing tire to wheel.

  • To prevent damaging the transmitter, set the tire changer boom in the position as shown in the figure.

    (a)

    Transmitter

    (b)

    Direction of turn table rotation

    (c)

    135°

    (d)

    Tire changer boom

    (e)

    90°

    (f)

    Starting point for fitting the bead to the rim
4.

Install the wheels to vehicle. WHEEL AND TIRE SYSTEM>Tire and Wheel>INSTALLATION

5.

Register the transmitter ID when the transmitter has been replaced. TIRE PRESSURE MONITOR(DIAGNOSTICS)>Register Transmitter (ID)

2. TPMS & KEYLESS ENTRY CM
 
3. TPMS CM
 

For installation procedures of the TPMS CM for models with keyless access with push button start system, refer to the “SECURITY AND LOCKS” section. SECURITY AND LOCKS>Keyless Entry Control Module>INSTALLATION

WHEEL AND TIRE SYSTEM > Tire Pressure Monitoring System　
INSPECTION
1. BASIC INSPECTION

For basic inspection, refer to “Basic Diagnostic Procedure” of “TIRE PRESSURE MONITOR (DIAGNOSTICS)”. TIRE PRESSURE MONITOR(DIAGNOSTICS)>Basic Diagnostic Procedure

2. SYSTEM BLOCK DIAGRAM

For system block diagram, refer to “System Block Diagram” in “TIRE PRESSURE MONITOR (DIAGNOSTICS)”. TIRE PRESSURE MONITOR(DIAGNOSTICS)>General Description>SYSTEM BLOCK DIAGRAM

3. MODULE I/O SIGNAL

For the specification (electrical component), refer to “Control Module I/O Signal” of “TIRE PRESSURE MONITOR (DIAGNOSTICS)”. TIRE PRESSURE MONITOR(DIAGNOSTICS)>Control Module I/O Signal>ELECTRICAL SPECIFICATION

WHEEL AND TIRE SYSTEM > General Diagnostic Table　
INSPECTION

Symptoms

Possible cause

Corrective action

Vehicle is unstable.

Improperly inflated tire

Adjust the tire pressure.

Uneven wear

Check the tire referring to “Abnormal tire wear” in this table, carry out the procedure and replace the tire.

Front wheel alignment

Check or adjust the front wheel alignment.

Rear wheel alignment

Check or adjust the rear wheel alignment.

Front strut

Check the front strut. FRONT SUSPENSION>Front Strut>INSPECTION

Rear shock absorber

Check the rear shock absorber. REAR SUSPENSION>Rear Shock Absorber>INSPECTION

Front axle housing

Check the front axle housing. PROPELLER SHAFT / DRIVE SHAFT / AXLE>Front Hub Unit Bearing>INSPECTION

Front hub unit bearing

Check the front hub unit bearing. PROPELLER SHAFT / DRIVE SHAFT / AXLE>Front Hub Unit Bearing>INSPECTION

Rear hub unit bearing

Check the rear hub unit bearing. PROPELLER SHAFT / DRIVE SHAFT / AXLE>Rear Hub Unit Bearing>INSPECTION

Vehicle is abnormally out of balance.

Improperly inflated tire

Adjust the tire pressure.

Uneven wear

Check the tire referring to “Abnormal tire wear” in this table, carry out the procedure and replace the tire.

Stabilizer

Inspect the stabilizer.

Front wheel alignment

Check or adjust the front wheel alignment.

Rear wheel alignment

Check or adjust the rear wheel alignment.

Abnormal wheel vibration

Improperly inflated tire

Adjust the tire pressure.

Uneven wear

Check the tire referring to “Abnormal tire wear” in this table, carry out the procedure and replace the tire.

Improper wheel balancing

Check the wheel balance. WHEEL AND TIRE SYSTEM>Tire and Wheel>INSPECTION > WHEEL BALANCING

Front axle housing

Check the front axle housing. PROPELLER SHAFT / DRIVE SHAFT / AXLE>Front Hub Unit Bearing>INSPECTION

Front hub unit bearing

Check the front hub unit bearing. PROPELLER SHAFT / DRIVE SHAFT / AXLE>Front Hub Unit Bearing>INSPECTION

Rear hub unit bearing

Check the rear hub unit bearing. PROPELLER SHAFT / DRIVE SHAFT / AXLE>Rear Hub Unit Bearing>INSPECTION

Abnormal tire wear

Improperly inflated tire

Adjust the tire pressure.

Improper wheel balancing

Check the wheel balance. WHEEL AND TIRE SYSTEM>Tire and Wheel>INSPECTION > WHEEL BALANCING

Front wheel alignment

Check or adjust the front wheel alignment.

Rear wheel alignment

Check or adjust the rear wheel alignment.