I have a fairly new to me 2008 VW GTI (US model, aka "Golf GTI" in other parts of the planet) and am trying to figure out the specs for the brakes. Specifically, I'm trying to determine the exact size of the OE brake rotors and their wear tolerance. Searching the web I've found conflicting information. For example, one site lists the original thickness as 29.5mm and the minimum as 25.5. For aftermarket, I've found ones that are 27mm new, and 25mm minimum.
Yet, many sites list the OE brake rotor thickness as 25mm and I can't find a minimum for those. The rotors are current at 25mm, so I'm trying to determine if they're relatively new, or need to be replaced.