Mazda RX-8 2004 - BRAKE FEATURES

OUTLINE
04–00–2
BRAKE FEATURES
CHU040001021S01
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BRAKE SPECIFICATIONS
CHU040001021S02
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Improved safety • Intrusion minimizing brake pedal adopted
• Electronic brakeforce distribution (EBD) control adopted
• ABS adopted
• Dynamic stability control (DSC) adopted
Improved braking force • Large diameter front disc brakes adopted
• Large diameter rear disc brakes adopted
• Large diameter power brake unit adopted
Improved serviceability • Combined sensor integrating the yaw rate and lateral-G sensors adopted
• Steering angle sensor that uses controller area network (CAN) adopted
• Enhanced malfunction diagnosis system for use with WDS or equivalent
Improved operability • Center lever type parking brake, adjustable from vehicle interior, adopted
Size and weight reduction • Integrated construction of the hydraulic unit (HU) and control module (CM) adopted for the
ABS HU/CM and DSC HU/CM
• Integrated construction of the front wheel hub component and front ABS wheel-speed sensor
adopted
Improved durability • Plunger type master cylinder adopted
Item Specification
Brake pedal
Type Suspended design
Pedal lever ratio 2.8
Max. stroke (mm {in}) 140 {5.51}
Master
cylinder
Type Tandem (plunger type)
Cylinder bore (mm {in}) 22.22 {0.875}
Front brake
(disc)
Type Ventilated disc
Cylinder bore (mm {in}) 54.0 {2.13}
Pad dimensions (area x thickness)
4,840 x 11 {7.744 x 0.43}
(mm
2
x mm {in
2
x in})
Disc plate dimensions
(outer diameter x thickness)
Standard suspension: 303 x 24 {11.9 x 0.94}
Sport suspension: 323 x 24 {12.7 x 0.94}
(mm {in})
Rear brake
(disc)
Type Ventilated disc
Cylinder bore (mm {in}) 42.85 {1.687}
Pad dimensions (area x thickness)
3,330 x 9 {5.328 x 0.4}
(mm
2
x mm {in
2
x in})
Disc plate dimensions
(outer diameter x thickness)
302 x 18 {11.9 x 0.71}
(mm {in})
Power brake
unit
Type
Vacuum multiplier
Single diaphragm
Outer diameter (mm {in}) 274 {10.8}
Rear wheel
braking force
control device
Type EBD (Electronic brakeforce distribution)
Parking brake
Type Mechanical two-rear-wheel control
Operation system Center lever type
Brake fluid Type SAE J1703, FMVSS 116 DOT3