I maybe said it not that clear, I referred to Dan not using the Rides, so guessed he could be a little slower in topspeed compared to the guys using the Rides. Officially, thes are also 60 D but more of a low profile tire. But they are also more of a balloon shape compared to the rather flat Tamiya Radial shapes. So with a set of new Rides, you tend to have a little bigger diameter. They settle in and after some batteries they get flatter, too. So what I wanted to say was, that on a big open track, the Topspeed can be a little higher using a set of new Rides from our experience.