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Home >> Porsche >> 2021 >> 911 Targa 4 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 57 (46 Brakes - Brake Mechanism 3.8L (Eng Code MDK.E) -- 992 - 911 CARRERA (992)) >> 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
Brake disc diameter, front   Diameter 408 mm    
Brake disc diameter, rear   Diameter 380 mm    
Brake disc thickness, front   Measured value 34 mm    
Brake disc thickness, rear   Measured value 30 mm    
Thickness tolerance of brake discs, maximum   Measured value 0.02 mm    
Effective brake disc diameter, front   Diameter 336.6 mm    
Effective brake disc diameter, rear   Diameter 311, 6 mm    
Brake pad area per wheel, front   Area 185 cm2    
Brake pad area per wheel, rear   Area 133 cm2    
Surface thickness in front New Setpoint 12.4 mm    
Surface thickness in rear New Value 11.3 mm    
Brake disc wear limit, front   Measured value 32 mm    
Brake disc wear limit, rear   Measured value 28 mm    
Lateral runout of brake disc, maximum   Measured value 0.03 mm    
Lateral runout of wheel hub, maximum   Measured value 0.03 mm    
Lateral runout of brake disc when installed, maximum   Measured value 0.06 mm