The safest bet for original files. You can find the Standard Edition or the Black Edition , which includes extra cars and challenges.
Finding a "highly compressed" version is often a priority for users with limited bandwidth. Community consensus points to a few reliable archives: The safest bet for original files
Use tools like 7-Zip or WinRAR to extract the contents. If it is an ISO file, right-click and select "Mount". right-click and select "Mount".