And there Amerikiwi you have it in a nut-shell.......'in most cases they are not slower, they are often more driftable, and ALLOW THE CAR TO CORNER IN THE MANNER IT WAS DESIGNED TO DO. With the SS on the 'better' tyres, it was neither fish nor fowl. It wanted to grip but couldn't, or made a half-arsed attempt at doing so, and every time the rear stepped out, once it let go, it was all over, rather than being in a nice controlable speedway type drift. Will be watching the boys at the Roycroft festival next weekend with renewed interest.