Easy-to-Add Coaster Type in Ideas Posted February 21 · Report reply The spiral coaster is a Schwarzkopf Jet Star/Speedracer model. I think what OP is referring to is Schwarzkopf's travelling looping coasters that had a tire drive lift (Dreier Looping, Thriller, etc). You could argue that this should be a separate ride type as there are some differences between the Schwarzkopf loopers that have tire drives and those that have a chain (such as a slightly larger track gauge and a different style of wheel assembly). However, the differences are too small to be noticed in game. I think it would be better to add a tire drive track element to the existing looping coaster (though this may require a new save format).