I don't have a solid answer but I have a couple resources that could help... maybe... ? From what I've heard, many OEM 17" wheels will fit over R or PP brakes.
Here are a couple links to some threads that have a little more info.
I have a 2016 Golf R that unfortunately came with the 19-inch package. Because I live in NJ, which has terrible roads and potholes, I'm downsizing to 17-inch wheels for comfort and to avoid worrying as much about blowing out a tire/rim. I'm looking at any number of wheels from TireRack that...
Hi, Has anybody fitted 17 inch rims to a GTI Mk7 with the performance package. The rotor diameter and brake caliper are a lot larger. Does this present any rubbing issues. I want to fit 17 inch rims with winter tires 225X45 for extra tire height. Thanks, Modog.
ALSO tire rack has a wheel section that show all of the 17" sets they carry that will fit the R, take a look at the specs on some of those and compare.