We do not host direct download links here for copyright reasons. However, we can tell you where the verified working repacks are discussed:
The "Complete Edition" was a major upgrade over the original 2011 release. It is particularly noted for removing the controversial requirement, replacing it with Steamworks. Dirt 3: Complete Edition (Unboxing/Breakdown/Demo) dirt 3 complete edition multi5 repack work
Find the installer in: GameFolder\_CommonRedist\OpenAL\2.0.7.0\oalinst.exe . We do not host direct download links here