Hi Stuart

Deffo not the case , the Cp5555 there are 2 types apart from leading and trailing

one of the Cp5555 calipers can use upto a 378/380 providing that you use the ones that requires a minimum of 355 disc

the other Cp5555 only has a max 355 disc and minimum 330 disc

Hi Dave

these would be ok on the road mate , although they don't have dust seals

thats no big deal tho

marco