Well, it is what it is. I have seen 160 on several occasions in both cars. The coupe just saw 165 in a mile run....a few weeks ago, just after the half mile event. I think the car is capable of 180, but I do think you would need no less than a mile and half if not further to pull it off. The car is stable as can be at 160 as I lane changed at that speed no problem. The problem is finding a safe place to do it. I was in IL on a lonely straight road I was familiar with. Did a data log run for the 1 mile to see what she looked like. Just wasn't going any further where there would be crossroads. No crossroads, no houses, just straight road. And a lot of wind. So, who knows on calm day, straight smooth road, what she would really do in a mile. But, having been humbled by the GTR's, 214 in a half mile, I'm thinking sell both my cars and buy a stock GTR...lol.