I just ordered some Spitfire F4 Radial Full 56mm. No idea what to expect.
The specs I've seen on store sites says that they are slightly wider (contact patch and overall) than Conical Fulls of the same diameter, but about comparable. I think with the rounded edges, these things will be even better at rolling up to sketchy spots. Hopefully the rounded edges also make them slide a bit easier without that hard edge biting the ground.
I wonder which is going to get the axe from Spitfire between the three: Radial Slim, Radial, and Radial Full.
To me it seems like Radial slim still fills a huge hole in their line-up, but I feel like either Radial or Radial Full has to go. Makes sense for them to push "the rounded version of our most popular wheel" in the Radial Full. I could see them becoming the third choice behind Conical Full and Classics for that very reason.