996tt brake disc minimum thickness

[dougg996]

Anyone able to tell me what the minimum disc thickness on 996tt discs should be before replacement?

[Loren]

Non-Ceramic (iron) brakes only

Brake disc thickness, new -- front 34 mm , rear 28 mm

Minimum brake disc thickness after machining* -- front 32.6 mm, rear 26.6 mm (* The brake disc must only be reworked symmetrically, i.e. from both sides evenly.)

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

[dougg996]

Thanks Loren, that's great. I have also asked the same question about my Cayenne discs in the 92A forum. Hopefully you will be able to give me the relevant details.