I was inspired by the newer versions of MotoGP, where the tires are darker and more reflective. Only textures for clear/cloudy weather are changed, wet remain unchanged.
HOW to Install:
1. Go to the game directory and backup the GFX.MIX file
2. Extract my GFX.MIX file to the game directory and replace the original one
3. There are also *.DDS sources in the archive
* Archive is highly compressed to 78MB, after unpacking ~738MB.