Peter,
You are right about the thickness of the new ones - I have some from Bristol and they are 12.8 mm, which is quite thin by modern standards, but the Bristol rotors are solid, whereas they are ventillated in most modern cars.
My understanding is that the rules re rotor thickness in Australia are set by each State/Territory.
For modern cars in Victoria I believe they rely on car manufacturers specifications for the minimum thickness, which can vary significantly between different car models. The min thickness is usually stamped on the disc on modern cars, but it is not stamped on the discs I bought from Bristol.
There are different rules for standard equipment and modifications depending on the age of the car. What year was your 411 manufactured?
Last edited by Kevin H; 27-02-20 at 03:33 AM.
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