Yup. It was tough mounting Ravens on Iron Cross. I have a compressor and used soapy mix. For one I ended up using a tube first to force one side bead on, removed the tube and soaped up and it popped the second one on. These tires have been solid for a half a season of cross at 25psi and even a practice at 16.5psi (deflation mishap). Grip-wise I like them on asphalt and hardpack. They are OK-ish is deep mud and grass. Loose & dry stuff they don't feel great - but what does.