Speed is not the issue. Most decent cars nowadays can go 200km/h easy. Question is how safe are they at those speeds and how safe it will be if you have to emergency brake or swerve suddenly. I also did around 210km/h in my old 2005 Accord 2.4. All it took was guts as car was quite floaty at that speed. Luckily no idiot suddenly swerved into my path or no dog was crossing the highway. If I had to swerve or brake at that speed, I probably would not be here now writing this.
My 530 feels more stable at those high speeds, but again, it's also due to your reflexes and reactions if something suddenly comes across your path. So while it's nice to compare high speeds and all, please do take safety as first consideration first.