The textures seem to be made for an outdated version of the Nurburgring track.
The adv.dds textures are misaligned on the last corner banners.
There is a file, called curb2.dds, which seems to represent the curb2B.dds from the original version.
But the curb2.dds is a 2048x2048 texture, while curb2B.dds is 4096x2048