The wilwood kit for the rear lists that it has a 2.36 offset. I'm not sure if it's 2.36 mm or what they are referring to, but I already have rubbing issues on my car as is and I don't want to make it any worse.
The measurement is in inches and it is defining the spacers necessary to center the caliper on the rotor. The 2.36 and the 2.50" offset kits use the exact same rotor and caliper set, one won't stick out further than the other. Compared to eachother.
That said, I did have a slightly different shim on mine and it wasn't the first time Wilwood had seen that. Factory axle housing tolerances, I suppose.
The rotor can't me all that much thicker than a drum..
