I have them on all 4 corners of my Ed. 30. I can't say they're bad for road use but I need to try different tyres to compare better. Not suited for track use, that's for sure... I have a pair of GY Asy 2 on my GT Sport and I like them a lot. Just the side wall isn't that stiff but that makes them more comfier and silent, which I prefer for the GT Sport.