52mm or 55mm brake pads?

msherry21

Hi all, I'm looking to get some new brake pads for my Allez. I'm going to change them for some cartridge pads but need to know whether to get 52mm or 55mm pads? Does it make a difference? Can I use either? It has 52mm pads on at the moment.
I like the look of these on CRC:

http://www.chainreactioncycles.com/Mode ... elID=55815

Would they be suitable or can someone recommend better?

Cheers, Michael.

msherry21

Anyone???....

Cheers, Michael.