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Home >> Porsche >> 2021 >> 911 Targa 4 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> 46 Brakes - Brake Mechanism 3.0L (Eng Code MDK.Ca) -- 992 - 911 CARRERA (992) >> WM, 4600TW Grey Cast-Iron Brakes - Technical Values And Wear Limits >> Technical Values

Technical Values

Location Description Type Basic value Tolerance 1 Tolerance 2
Brake disc diameter, front   Diameter 330 mm    
Brake disc diameter, rear   Diameter 330 mm    
Brake disc thickness, front   Measured value 34 mm    
Brake disc thickness, rear   Measured value 28 mm    
Thickness tolerance of brake discs (max.)   Measured value 0.02 mm    
Effective brake disc diameter, front   Diameter 266.6 mm    
Effective brake disc diameter, rear   Diameter 274.6 mm    
Brake pad area per wheel, front   Area 334 cm2    
Brake pad area per wheel, rear   Area 252 cm2    
Pad thickness, front   Measured value 12.0 mm    
Pad thickness, rear   Measured value 9.34 mm    
Brake disc wear dimension, front   Measured value 32.0 mm    
Brake disc wear dimension, rear   Measured value 26.0 mm    
Lateral runout of brake disc (max.)   Measured value 0.03 mm    
Lateral runout of wheel hub (max.)   Measured value 0.03 mm    
Lateral runout of brake disc when installed (max.)   Measured value 0.06 mm