Yes I could've just run semi slicks on my CE28's but to me, running semi slicks on the road is such a waste. In addition, I still wanted top quality lightweight alloys e.g. Volk Racing, however I would never be able to justify the cost of them new (approx. £2.5k). This has now been resolved though as I picked up a second hand set of the discontinued SE37K's. They are in need of a refurb which Willie will take care of and should be very special when done :)
I terms of rubber, they will be wrapped in Dunlop Direzza DZ03G semi slicks; a quality tyre that is a favourite of TGM's. I'll do a write up of them at a later date as I have to fly, but before I do, here's a picture of the Sard aeroblades a.k.a vortex generators on the car; complete with black roof :)