There are a few, but they might be hard to find.
In 255/35/18 runflats, there are:
Michelin Pilot Sport PS2
Bridgestone Potenza RE960 AS
Bridgetsone Potenza RE050A
Continental ContiSportContact 2
The sensors on your car are probably not located within the wheels (most likely piggy backs off the ABS sensor).
Going non-runflat is no problem, just be careful in case you get a nail or something that you have a backup plan. (repair kit in a can, CAA, carry a spare wheel & tire, etc...)