Boy let me tell you. I purchased a set of wheels and had Discount put a set of hubcentric rings on my GTI, they were 66.5mm to 57.1mm, and I had a weird vibration/oscillation at around 55+ MPH that would present it's self, then go away. I spoke with Alen Z. at UroTuning and he got me set up with the proper hubcentric ring for my GTI and I had Discont swap them out and *poof* oscillating vibration gone! So if yo u order a set of wheels, I would say it is 100% absolutely crucial that you get the exact hubcentric ring for your setup! 2017 Volkswagen GTI Performance Package Aodhan AFF7 18x8.5" 5x112 bolt pattern +35mm offset front and rear. Thank you again Alen!