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Want to stock up on some pads. Do 105 and Tiagra use the same pads?
Hydraulic discs.
Yes
Woohoo!
Cheers!
Yep, and Ultegra/XTR/DuraAce as well!
There is the Shimano compatibility chart although it only shows the latest iteration of brake pads. The numbers (03,04,05) are just the generation of pad material so a G03A will fit the same as a G05A but the latter is supposedly improved and lasts longer.
https://productinfo.shimano.com/#/com?cid=C-460&acid=C-653
The Gorilla website, as an example, also shows compatibility of their equivalents.
This has been very useful for me as I was scratching my head about which pads to buy for my Tiagra.
One question though, what do the different initial letters mean? Some have a KO prefix and some LO. Is it basically the same pad but with the fin, or is it something else?
Is it basically the same pad but with the fin, or is it something else?
Yep, I think so. K = no fin, L = with fin. As above, the number is the generation, and the letter at the end is the material.
G and J are the not finned/finned equivalents for non-flat-mount brakes.
K and G look quite similar, but are not interchangeable. Likewise L and J.