911S Brake Spec

[304065]

Does anyone have a view as to the wear limit for rotors and pads for aluminum "S" calipers?

The factory spec for the rotor I was able to find:

Rotor 20.0 -.02mm, wear limit 18.0mm
#806 Front 19.4
#806 Rear 19.0 (with lip on outer edge of 19.6)

According to Pagid, the U4503 "S" caliper pad has a thickness of 19mm. So 50% wear would be 9.5mm.

#806 Outer Left Side 9.9 Right Side 9.7 (hows that for taper)
#806 Inner Left Side 10.6 Right Side 11.2 (wow)

[Bill Verburg]

The pads can be worn down as much as you want, but be aware that the thinner they get the more heat in the fluid will be a problem. Personally for track use I would want to keep at least 50% new pad thickness(75% is even better).

The rotors have 2 wear limits

• the symmetric wear limit is 1mm/side which leave 18mm remaining
• for machining its 18.6mm which will allow .3mm of remaining wear per side

[304065]

Muchos gracias Bill. Gives me a reason to try the new Pagid Black compound.