You might be find that most of the guys on here are going "bananna's" over the CR's and not many talk about the CX's. These are made in Belguim Europe,maybe better asking somebody from there.Quite a few sold here in the U.K. last year but don't know of any locally because they are too wide for safe road travel here in Northern Ireland. PROFI mag says that NH looking at track system for CX from Grecav Italy called Bruko unit.Widths of 600_750_900mm available,Said to have ground pressure 30% that of a 800_65r32 convential tyre.