Section 87 (Brake System): General Description: Specification

WARNING: This page is about a different car, the 2016 Subaru Impreza and 2016 Subaru Crosstrek. However, it is still accessible from the selected car via links, so may be relevant.

Front disc brake	Size		15-inch type	16-inch type
	Type		Disc (floating type, ventilated)
	Effective disc diameter	mm (in)	228 (8.98)	244 (9.61)
	Disc thickness X Diameter	mm (in)	24 X 277 (0.94 X 10.91)	24 X 294 (0.94 X 11.57)
	Effective cylinder diameter	mm (in)	42.8 (1.685) X 2	42.8 (1.685) X 2
	Pad dimensions (Length X Width X Thickness)	mm (in)	117.8 X 50.5 X 11.0 (4.638 X 1.988 X 0.433)	117.8 X 50.5 X 11.0 *4 (4.638 X 1.988 X 0.433)
	Clearance adjustment		Automatic adjustment
Rear disc brake	Size		15-inch type
	Type		Disc (floating type, solid)
	Effective disc diameter	mm (in)	238 (9.37)
	Disc thickness X Diameter	mm (in)	10 X 274 (0.39 X 10.79)
	Effective cylinder diameter	mm (in)	38.1 (1.500)
	Pad dimensions (Length X Width X Thickness)	mm (in)	92.0 X 33.0 X 9.0 (3.622 X 1.299 X 0.354)
	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)	240 (14.64)
Brake booster	Type		Vacuum suspended
	Effective diameter	mm (in)	208 + 229 (8.19 + 9.02)
Brake line			Dual circuit system
Brake fluid			FMVSS No. 116, DOT3, or DOT4 CAUTION: Do not let brake fluid come into contact with the painted surface of the vehicle body. Wash away with water immediately and wipe off if it is spilled by accident. Avoid mixing brake fluid of different brands or different grades even from the same brand to prevent fluid performance from degrading. When refilling brake fluid, do not allow dirt or dust to get into the reservoir tank. Always use new SUBARU genuine brake fluid when replacing or refilling the fluid. Do not reuse drained brake fluid.

NOTE: Refer to "PARKING BRAKE" for parking brake specifications. < Ref. to SPECIFICATION , General Description. >

Item					Standard	Limit
Front brake	Pad thickness		All models	mm (in)	11 (0.43)	1.5 (0.059)
	Disc thickness		All models	mm (in)	24 (0.94)	22 (0.87)
	Disc runout			mm (in)	-	0.05 (0.0020)
Rear brake (disc type)	Pad thickness	mm (in)	Solid disc		9.0 (0.354)	1.5 (0.059)
	Disc thickness	mm (in)	Solid disc		10 (0.39)	8.5 (0.335)
	Disc runout			mm (in)	-	0.05 (0.0020)
Parking brake	Inside diameter			mm (in)	170 (6.69)	171 (6.73)
Parking brake	Lining thickness			mm (in)	3.5 (0.14)	1.5 (0.059)

Brake pedal force N (kgf, lbf)			Fluid pressure kPa (kgf/cm² , psi)
Brake booster	Brake fluid pressure with engine stopped	147 (15, 33)	533 (5, 77)
	Brake fluid pressure with engine stopped	294 (30, 66)	1551 (16, 225)
	Brake fluid pressure with engine running and vacuum pressure at 66.7 kPa (500 mmHg, 19.69 inHg)	147 (15, 33)	6177 (63, 896)
		294 (30, 66)	11273 (115, 1635)

Brake pedal

Free play

mm (in)

0.5 - 2.7 (0.02 - 0.11)
[When pulling the brake pedal upward with a force of less than 10 N (1 kgf, 2 lbf)]