No, those years had a 5x115 bolt pattern. The Regal needs a 5x120 bolt pattern, or at the very least a 5x4.75" bolt pattern, which is 5x120.7 mm. The 2010+ CTS does come with a 5x120 bolt pattern, and I think even the centre bore matches (67.1). I can't find much on the offset of the 2010+ CTS, other than that it might be 48 mm compared to our 41 mm.