Nearly a third of all cars in Europe are fitted with Conti's as the OE tyre - everything from the porsche to Mercededes...
Where as Conti specifically designed a tyre for the BMW M3, Hankook were off sealing OE fitment for the Ford Fiesta, Hyundai modela, Kia models and the VW Jetta....
I personally don't rate the Hankooks - not bad, but definitely not better than the Conti SP3 IMO.
OE tyres are chosen for a reason. Not saying the Conti's are the best, I would just go for Conti's in this case, or a Michelin/Pirelli/Bridgestone etc alternative.