After a bunch of searching online I've only found one thread on one forum stating that the offset of the rear wheel for the 748/916/996/998 is 22mm. I have a wheel at home that I measured and came up with about 20mm. While I'm much more inclined to trust my measurement than an unverified internet post, the wheel I have for reference is bent so that makes my measurement suspect. Does anyone know FOR SURE what the offset of the rear wheel is. To clarify, by offset I mean the distance from the center plane of the wheel to the mounting surface.