As part of my job I write content for NVIDIA's GeForce.com, and today that's a quick guide for unlocking high res textures in Rage on the PC: http://www.geforce.com/News/articles/how-to-unlock-rages-high-resolution-textures-with-a-few-simple-tweaks (this works on both NVIDIA and AMD GPUs)
Our CMS is in the process of republishing the page because we've since tested the 16K stuff mentioned in the article and have found zero improvements going from 8K to 16K. To improve things further would require a texture pack, as mentioned once by John Carmack.
Thanks!
