Was thinking about them for a 172. But they really need a fraction wider wheel, say, 7.5" wide, to do them justice. And I couldn't find anyone here who had that size. And I wasn't sure if 8s would fit. I decided that an extra 10 mm of tyre width wasn't worth the trouble. That it was a lot easier and probably cheaper in the long run to get the same result by going for a stickier but shorter life 205.