Assuming you are in NSW otherwise this advise could be wrong / irreverent
According to the “Identifying common property in a strata scheme: update on common Memoranda” provided by NSW
c. Original floor tiles and associated waterproofing affixed to common property floors. Strata responsibility.
So the original floor tiles are BC (Body Corporate (for Jimmy’s ref)) responsibility, but the BC as a whole at an AGM decides whether to replace ALL the tiles in ALL the lots by a majority vote. Individual lot owners can at their own cost replace their tiles if AGM votes against doing them all but from then on these lot owners become responsible for the new tiles.
a. Floor tiles affixed after the registration of the strata plan. Lot responsibility
If some owners have damaged their tiles it’s an insurance job to replace the broken tiles (and just the broken tiles providing they were original).
If some owners don’t like the tiles that are fitted I believe they should be allowed to replace them at their own cost (unless a majority at AGM vote to replace them all for everyone).
Also any lot owners who have already replaced the tiles at their own expense are no longer eligible for them to be replace again at BC expense because they are now lot owners responsibility now.