[Subanez]

30K on the original tires? Jeeze...I would imagine they are quite ready to be changed.

Not sure what you are talking about concerning shifting, though, sorry.

And as for tires, we could all sit here and tell you what WE like the best, but unless one of the members sells tires for a living, we have limited experience with the tires we have personally tried.

I'd get on the phone with a tire specialist, or go visit a shop that deals with high performance cars/tires, because they will be the ones that can answer your questions. All WE can do is say how much we like the tires on our car.