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Home >> Porsche >> 2021 >> Macan S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 53 (46 Brakes - Brake Mechanism 2.9L -- 95B - MACAN (95B)) >> WM, 4600TW Grey Cast-Iron Brakes - Technical Values And Wear Limits >> Technical Values

Technical Values

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Location Description Type Basic value Tolerance 1 Tolerance 2
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 on both sides of axle. Vacuum brake booster, internally ventilated brake discs with six-piston aluminium monobloc fixed-calliper brake on front axle and one-piston floating-calliper brake with integrate d parking brake on rear axle.        
PSM Porsche Stability Management (PSM) as standard with functions ABS, ASR (Traction Control TC+, engine drag torque control MSR, ABD, PTM lock control (longitudinal)). Optional: Levelling system, infinite shock absorber adjustment PASM, electronically regulated limited-slip rear differential PTV+        
Front brake discs Ø   Diameter 360 mm    
Rear brake discs Ø   Diameter 330 mm    
Brake disc thickness, front   Measured value 36 mm    
Brake disc thickness, rear   Measured value 22 mm    
Maximum thickness tolerance of brake disc   Control value 0.01 mm    
Brake pad area per wheel, front   Pad quality ECE 191 cm2    
Brake pad area per wheel, front   Pad quality NAR 172.6 cm2    
Brake pad area per wheel, rear     66.3 cm2    
Pad thickness, front Wear limit 2 mm Pad quality, ECE 9.48 mm    
Pad thickness, front Wear limit 2 mm Pad quality, NAR 9.68 mm    
Pad thickness, rear Wear limit 2 mm   11.6 mm    
Brake disc wear dimension, front     34 mm    
Brake disc wear dimension, rear     20 mm    
Lateral runout of brake disc, max.     0.03 mm    
Lateral runout of wheel hub, max.     0.03 mm    
Lateral runout of brake disc when installed, max.     0.06 mm    


Location Description Type Basic value Tolerance 1 Tolerance 2
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 one-piston floating-calliper brake with integrate d parking brake on rear axle.        
PSM Porsche Stability Management (PSM) as standard with functions ABS, ASR (Traction Control TC+, engine drag torque control MSR, ABD, PTM lock control (longitudinal)). Optional: Levelling system, infinite shock absorber adjustment PASM, electronically regulated limited-slip rear differential PTV+        
Tandem brake booster Ø (vacuum)     9/9 Zoll    
Boost ratio     9    
Brake master cylinder Ø     28.57 mm    
Brake-circuit division     24/12 mm    
Brake disc Ø, front     390 mm    
Brake disc Ø, rear     356 mm    
Brake disc thickness, front     38 mm    
Brake disc thickness, rear     28 mm    
Thickness tolerance of brake disc, max.     0.01 mm    
Effective friction radius, front     76 mm    
Effective friction radius, rear     152.75 mm    
Piston Ø in brake calliper, front 2 x 36 mm + 2 x 36 mm + 2 x 36 mm        
Piston Ø in brake calliper, rear 43 mm        
Brake pad area per wheel, front     234 cm2    
Brake pad area per wheel, rear     106 cm2    
Pad thickness, front Pad quality ECE/wear limit 2 mm Dimension 9.5 mm    
Pad thickness, front Pad quality NAR/wear limit 2 mm Dimension 9.7 mm    
Pad thickness, rear Wear limit 2 mm Dimension 11.6 mm    
Brake disc wear dimension, front   Control value 36 mm    
Brake disc wear dimension, rear   Control value 26 mm    
Maximum lateral runout of brake disc   Control value 0.03 mm    
Maximum lateral runout of wheel hub   Control value 0.02 mm    
Maximum lateral runout of brake disc when installed   Control value 0.06 mm    
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