Guys, Guys and Girl,
We never get the specs the factory sells us. i think that you need the perfect conditions, driver, fuel and lots more to get to that....with a standard car.
My 230kmph is is as accurate as my speedo...even though I did that with the standard 185/55-14 tyres. I know of a race on the highway where a VTS (now a former VTS) did a flat 250kmph which was measured with a Alfa 156 GTA. The VTS had only minor things done and was chiped...dont ask me how he did that.
I just put a set of Brock B2 Supercup SLC Chrome and some 195/45-15 SP9000's...the car drives like is glued to the pavement.

I have to check my specs though...