WHEEL AND TIRE SYSTEM
WT

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 (0.06 in)
Alloy wheel | 1 mm (0.04 in)

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 (12.2 kgf-m, 88.5 ft-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 (0.04 in)

- Steel wheel

  Service limit:

  Axial and longitudinal runout: 1.5 mm (0.06 in)

(3)

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

- Front: PROPELLER SHAFT / DRIVE SHAFT / AXLE>Front Hub Unit Bearing>INSPECTION

- Rear: PROPELLER SHAFT / DRIVE SHAFT / AXLE>Rear Hub Unit Bearing>INSPECTION

(4)

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

2. TIRE ROTATION

Rotate tires periodically (10,000 km/6,000 miles) 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 (0.08 in)

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

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

- TPMS CM for keyless entry model is integrated with the keyless entry control module.

- For removal procedures, refer to “SECURITY AND LOCKS” section. SECURITY AND LOCKS>Keyless Entry Control Module>REMOVAL

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:

1.4 N·m (0.1 kgf-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

- TPMS CM for keyless entry model is integrated with the keyless entry control module. When the keyless entry control module has been replaced, re-register the TPMS transmitter. TIRE PRESSURE MONITOR(DIAGNOSTICS)>Register Transmitter (ID)

- For installation procedures, refer to “SECURITY AND LOCKS” section. SECURITY AND LOCKS>Keyless Entry Control Module>INSTALLATION

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. Inspection: FRONT SUSPENSION>Wheel Alignment>INSPECTION Adjustment: FRONT SUSPENSION>Wheel Alignment>ADJUSTMENT
Rear wheel alignment | Check or adjust the rear wheel alignment. Inspection: FRONT SUSPENSION>Wheel Alignment>INSPECTION Adjustment: FRONT SUSPENSION>Wheel Alignment>ADJUSTMENT
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. Inspection: FRONT SUSPENSION>Wheel Alignment>INSPECTION Adjustment: FRONT SUSPENSION>Wheel Alignment>ADJUSTMENT
Rear wheel alignment | Check or adjust the rear wheel alignment. Inspection: FRONT SUSPENSION>Wheel Alignment>INSPECTION Adjustment: FRONT SUSPENSION>Wheel Alignment>ADJUSTMENT
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. Inspection: FRONT SUSPENSION>Wheel Alignment>INSPECTION Adjustment: FRONT SUSPENSION>Wheel Alignment>ADJUSTMENT
Rear wheel alignment | Check or adjust the rear wheel alignment. Inspection: FRONT SUSPENSION>Wheel Alignment>INSPECTION Adjustment: FRONT SUSPENSION>Wheel Alignment>ADJUSTMENT