| Service brake (footbrake) with grey cast iron brake discs (standard brake) with PSM (Porsche Stability Management) as standard |
Hydraulic dual-circuit brake system with brake-circuit division per axle. Vacuum brake booster, internally ventilated brake discs with six-piston aluminium monobloc fixed-calliper brake on front axle and four-piston aluminium monobloc fixed-calliper brake on rear axle. |
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| PSM |
Porsche Stability Management (PSM) as standard with the functions Antilock Brake System (ABS), Anti-Slip Regulation (ASR), Engine Drag Torque Control (EDTC), Automatic Brake Differentia l (ABD), brake force boosting, brake system pre-filling. |
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| Tandem brake booster Ø (vacuum) |
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9/10 Zoll |
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| Boost ratio |
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8 |
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| Brake master cylinder Ø |
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28.57 mm |
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| Brake-circuit division |
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24/12 mm |
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| Brake disc Ø, front |
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390 mm |
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| Brake disc Ø, rear |
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358 mm |
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| Brake disc thickness, front |
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38 mm |
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| Brake disc thickness, rear |
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28 mm |
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| Thickness tolerance of brake disc, max. |
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0.01 mm |
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| Effective brake disc Ø, front |
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323.4 mm |
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| Effective brake disc Ø, rear |
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302.2 mm |
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| Piston Ø in front brake calliper |
6 x 36 mm |
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| Piston Ø in rear brake calliper |
4 x 32 mm |
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| Brake pad area, front |
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480 cm2 |
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| Brake pad area, rear |
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200 cm2 |
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| Total brake pad area |
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680 cm2 |
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| Service brake (footbrake) with PCCB brake discs with PSM (Porsche Stability Management) as standard |
Hydraulic dual-circuit brake system with brake-circuit division per axle. Vacuum brake booster, internally ventilated brake discs with six-piston aluminium monobloc fixed-calliper brake on front axle and four-piston aluminium monobloc fixed-calliper brake on rear axle. The brake callipers are painted yellow for visual differentiation. |
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| PSM |
Porsche Stability Management (PSM) as standard with the functions Antilock Brake System (ABS), Anti-Slip Regulation (ASR), Engine Drag Torque Control (EDTC), Automatic Brake Differentia l (ABD), brake force boosting, brake system pre-filling. |
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| Tandem brake booster Ø (vacuum) |
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9/10 Zoll |
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| Boost ratio |
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8 |
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| Brake master cylinder Ø |
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28.57 mm |
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| Brake-circuit division |
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24/12 mm |
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| Brake disc Ø, front |
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420 mm |
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| Brake disc Ø, rear |
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370 mm |
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| Brake disc thickness, front |
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40 mm |
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| Brake disc thickness, rear |
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30 mm |
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| Thickness tolerance of brake disc, max. |
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0.01 mm |
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| Effective brake disc Ø, front |
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351.8 mm |
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| Effective brake disc Ø, rear |
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314 mm |
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| Piston Ø in front brake calliper |
6 x 36 mm |
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| Piston Ø in rear brake calliper |
4 x 32 mm |
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| Brake pad area, front |
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480 cm2 |
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| Brake pad area, rear |
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216 cm2 |
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| Total brake pad area |
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696 cm2 |
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| Pad thickness, front |
Wear limit 2 mm |
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approx. 9.7 mm |
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| Pad thickness, rear |
Wear limit 2 mm |
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approx. 8.8 mm |
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| Brake disc thickness, front |
New |
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38 mm |
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| Brake disc thickness, rear |
New |
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28 mm |
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| Brake disc wear dimension, front |
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36 mm |
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| Brake disc wear dimension, rear |
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26 mm |
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| Lateral runout of brake disc, maximum |
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0.03 mm |
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| Lateral runout of wheel hub, maximum |
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0.02 mm |
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| Lateral runout of brake disc when installed, maximum |
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0.06 mm |
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| Pushrod play |
Not adjustable |
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| Parking brake (foot-operated parking brake) |
Drum brake acting mechanically on both rear wheels |
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| Parking-brake drum Ø |
Wear limit 211 mm |
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210 mm |
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| Brake shoe width |
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30 mm |
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| Brake pad thickness |
Wear limit 1 mm |
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3 mm |
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| Pad thickness, front |
Wear limit 2 mm |
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approx. 8.6 mm |
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| Pad thickness, rear |
Wear limit 2 mm |
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approx. 8.9 mm |
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| Brake disc thickness, front |
New |
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40 mm |
+ 0.1 mm |
- 0.1 mm |
| Brake disc thickness, rear |
New |
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30 mm |
+ 0.1 mm |
- 0.1 mm |
| Brake disc wear limit, front |
Brake disc minimum thickness (wear limit) is stamped on the brake disc hub. Example: Min. Th. 37.7 mm |
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(Read value on brake disc hub) XX.X mm |
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| Brake disc wear limit, rear |
Brake disc minimum thickness (wear limit) is stamped on the brake disc hub. Example: Min. Th. 29.7 mm |
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(Read value on brake disc hub) XX.X mm |
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| Peak-to-valley surface roughness of brake disc |
New |
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0.006 mm |
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| Wear limit: Surface changes in front and rear brake discs |
Wear limit: Connected surface fracture > 1 cm2
and/or surface roughness of brake disc > 80 micrometer. Replace PCCB brake discs on both sides of the axle. |
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Values and procedure for: 46 51 02 Checking front PCCB brake discs/46 54 02 Checking rear PCCB brake discs. |
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| Lateral runout of brake disc, maximum |
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0.03 mm |
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| Lateral runout of wheel hub, maximum |
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0.02 mm |
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| Lateral runout of brake disc when installed, maximum |
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0.07 mm |
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| Pushrod play |
Not adjustable |
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| Parking brake (foot-operated parking brake) |
Drum brake acting mechanically on both rear wheels |
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| Parking-brake drum Ø |
Wear limit 211 mm |
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210 mm |
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| Brake shoe width |
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30 mm |
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| Brake pad thickness |
Wear limit 1 mm |
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3 mm |
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