Best to ask this on the alpine forum , not many early series alpine owners on CAT, so not a good sample of demand.
I could do better than that by sending an original rotor to them for comparison. I would send them a used one and not one of my NOS rotors.
hardly would be helpful to send a used, and likely turned (several times), rotor...
I have used early rotors that have never been turned.
Even " not being on the list" the SI/II brake drums are completely different from all later Alpine/Tiger ones since they carry external weights with balance bores. Weird designs and not easy to reproduce at all. Regarding the early front rotors they are also different than the later series. Slightly smaller diameter and least 2 different original thicknesses. Remember shims were used to center brake calipers on the SII. Not easy stuff too. Speedy Spares in UK used to repro early series rotors where I bought a couple of sets earlier. Don't think they are doing them anymore since they'll go out of biz soon. A pity though. Have a couple of comparative pics somewhere. Just need to find them
if they have been used, they have no value at all for establishing original dimensions... and you know that.
They were original to one of my cars and I doubt that a Harrington with 24K original miles has much wear on the brake rotors.
It depends on how the brakes are used and maintained. Drive it hard and get heat into the rotors so they warp kind of reduces the life of them Brake pad material and sticking caliper pistons effect the wear on the rotors
Yes, aware that driving style.. also climate etc will impact wear rate.. obliviously pad choice.. though back in the day stock pads would have been more likely the fitment.
The factory manual advised replacement if run out exceeds .004". The factory shop manual does not provide minimum rotor thickness, simply stating that the rotor should be replaced if worn. I know there are many who maintain that the rotors can safely be turned multiple times. I'm not one of them. Unvented rotors warp fairly easily when subjected to heat. The thinner the rotor, the faster they warp. Brakes are the very last area of any car than you want to cheap out on.
