|
Model |
1.5 R |
2.0 R |
WRX | ||
|
Front disc brake |
Size |
14-inch type |
15-inch type |
16-inch type | |
|
Type |
Disc (Floating type, ventilated) | ||||
|
Effective disc diameter |
mm (in) |
210 (8.27) |
228 (8.98) |
244 (9.61) | |
|
Disc thickness × Diameter |
mm (in) |
24 × 260 (0.94 × 10.24) |
24 × 277 (0.94 × 10.91) |
24 × 294 (0.94 × 11.57) | |
|
Effective cylinder diameter |
mm (in) |
57.2 (2.252) |
42.8 (1.685) × 2 | ||
|
Pad dimensions (Length × Width × Thickness) |
mm (in) |
115.0 × 44.3 × 11.0 (4.528 × 1.744 × 0.433) |
117.8 × 50.5 × 11.0 (4.638 × 1.988 × 0.433) | ||
|
Clearance adjustment |
Automatic adjustment | ||||
|
Rear disc brake |
Size |
— |
15-inch type | ||
|
Type |
— |
Disc (Floating type, solid) | |||
|
Effective disc diameter |
mm (in) |
— |
250 (9.84) | ||
|
Disc thickness × Diameter |
mm (in) |
— |
10 × 286 (0.39 × 11.26) | ||
|
Effective cylinder diameter |
mm (in) |
— |
38.1 (1.500) | ||
|
Pad dimensions (Length × Width × Thickness) |
mm (in) |
— |
92.0 × 33.0 × 9.0 (3.622 × 1.299 × 0.354) | ||
|
Clearance adjustment |
— |
Automatic adjustment | |||
|
Rear drum brake |
Type |
drum (Leading — Trailing type) |
— |
— | |
|
Effective drum inner diameter |
mm (in) |
254 (10) |
— |
— | |
|
Effective cylinder diameter |
mm (in) |
19 (0.75) |
— |
— | |
|
Lining dimensions (Length × Width × Thickness) |
mm (in) |
243.8 × 40.0 × 4.5 (9.6 × 1.575 × 0.177) |
— |
— | |
|
Clearance adjustment |
Automatic adjustment |
— |
— | ||
|
Master cylinder |
Type |
Tandem | |||
|
Effective diameter |
mm (in) |
23.8 (15/16) | |||
|
Reservoir type |
Sealed type | ||||
|
Brake fluid reservoir capacity |
cm3 (cu in) |
205 (12.51) | |||
|
Brake booster |
Type |
Vacuum suspended | |||
|
Effective diameter |
mm (in) |
208 + 229 (8.19 + 9.02) | |||
|
Brake line |
Dual circuit system | ||||
|
Brake fluid CAUTION: • Avoid mixing brake fluid of different brands to prevent fluid performance from degrading. • When filling with brake fluid, be careful not to allow any dust to enter the reservoir. • Use new SUBARU genuine brake fluid when replacing or refilling the fluid. |
FMVSS No. 116, DOT3, or DOT4 | ||||
NOTE:
Refer to “PB” section for parking brake specifications. 
|
Item |
Standard |
Limit | |||
|
Front brake |
Pad thickness |
mm (in) |
All vehicles |
11 (0.43) |
1.5 (0.059) |
|
Disc thickness |
mm (in) |
All vehicles |
24 (0.94) |
22 (0.87) | |
|
Disc runout |
mm (in) |
— |
0.05 (0.0020) | ||
|
Rear brake (disc type) |
Pad thickness |
mm (in) |
All vehicles |
9.0 (0.354) |
1.5 (0.059) |
|
Disc thickness |
mm (in) |
All vehicles |
10 (0.39) |
8.5 (0.335) | |
|
Disc runout |
mm (in) |
— |
0.05 (0.0020) | ||
|
Rear brake (drum type) |
Inside diameter |
mm (in) |
254 (10) |
256 (10.08) | |
|
Lining thickness |
mm (in) |
4.5 (0.177) |
1.5 (0.059) | ||
|
Rear brake (disc type) |
Inside diameter |
mm (in) |
190 (7.48) |
191 (7.52) | |
|
Lining thickness |
mm (in) |
2.8 (0.11) |
1.5 (0.059) | ||
|
Parking brake |
Lever stroke |
7 — 8 notches/200 N (20 kgf, 45 lbf) | |||
|
Brake pedal force N (kgf, lbf) |
Fluid pressure kPa (kgf/cm2, psi) | ||
|
Brake booster |
Brake fluid pressure with engine stopped |
147 (15, 33) |
545 (6, 79) |
|
294 (30, 66) |
1,564 (16, 227) | ||
|
Brake fluid pressure with engine running and vacuum pressure at 66.7 kPa (500 mmHg, 19.69 inHg) |
147 (15, 33) |
6,003 (61, 871) | |
|
294 (30, 66) |
11,273 (115, 1,635) | ||
|
Brake pedal |
Free play |
mm (in) |
0.5 — 2 (0.020 — 0.079) [When pulling the brake pedal upward with a force of less than 10 N (1 kgf, 2 lbf).] |