Wear limit technical data - 911 GT3
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Porsche 911, 2004 Porsche 911, 2003 Porsche 911, 2002 Porsche 911, and 2001 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.
Depending on the wear of cast iron brake discs, two condition criteria can make replacement necessary:
- Cracking in the holed (perforated) brake disc friction plates is in an advanced state.
- Brake disc minimum thickness is not attained due to wear (material erosion due to friction).TECHNICAL DATA BRAKE WEAR LIMIT - GT3 SPECIFICATIONS
Designation Note, dimensions Wear limit Pad thickness front approx. 12.0 mm 2 mm rear approx. 12.0 mm 2 mm Brake disc thickness, new front 34 mm rear 28 mm Minimum brake disc thickness (1) after machining (1) front 32.6 mm (1)(1) rear Brake disc wear limit front 32.0 mm rear 26.0 mm Peak-to-valley surface roughness of the brake disc after machining, max. 0.006 mm Thickness tolerance of the brake discs, max. 0.02 mm Lateral runout of the brake disc, max. 0.03 mm Lateral runout of the wheel hub, max. 0.03 mm Lateral runout of the brake disc when installed, max. 0.06 mm Pushrod play (measured at the brake pedal plate) approx. 1 mm Parking brake (handbrake) Drum brake acting mechanically on both rear wheels Parking brake drum 180 mm 181 mm Brake shoe width 25 mm Brake pad thickness 4.5 mm 2 mm (1) The brake disc must only be reworked symmetrically, i.e. from both sides evenly.