My buddy and I use a set of OZ Alleggerita HLTs in 17x8 on a 2012 WRX for autocross. We just noticed one of them is missing a hubcentric ring after a trip to the tire installer and sure enough they said it came there without one. We have a 2k mile trip coming up in three days and I'd really like to get one to make sure we don't have fun vibrations for all those hours in the car. With that said, I cannot confirm what the centerbore of the wheels is so I know what size rings to try to get locally. Can anyone help?