For this tile texture I decided to sculpt all my details as I wanted it to be unique, also because the player will be predominatly quite close to it, it demanded priority. I started with a basemesh that I imported into zbrush to sculpt the cracks and noise. I then retopologised everything and the final tile was 590 tri's. Although this may seem quite high, it will be instanced and I will be using alpha's to break it up.
The was the final result.