I have a Roof Rack Base Support System I originally purchased for my 2013 Countryman S. It fits perfectly on my 2017 Countryman S. The only difference is that it has a higher profile because the roof rails are now raised up 3-inches, instead of flush to the roof like on my 2013 CMS. MINIUSA.com recommends a different part number (82712327922) for a 2017-2018 Countryman vs. older Countrymans (part 82712148014). Visually, I can't see any different between the rack systems. Again, the older rack seems to fit perfectly. Does anyone have experience with the different racks part numbers and can he confirm that they’re basically the same?