This folder includes a level 29 profile that has just enough fans/xp which only requires you to finish a single multiplayer race to reach level 30. You can download it here:

https://drive.google.com/open?id=1iLmuScKvzlf3-z_YqRxPahM6akJ_M-Dq

Once downloaded, follow the steps below. If the link isn't working, let me know.

1. Go into you Steam installation root and find the folder "userdata".
2. Open the folder with your Steam-ID.
3. Find the folder "201700". This is the game-ID for DiRT Showdown.
4. Back up the folder "remote" by moving it somewhere else. It contains your save profile/s.
5. Extract the "remote" folder you downloaded and drag it into the DiRT Showdown ID folder.
6. Run the game and select the "LEVEL 29" profile.

Now for actually earning the remaining fans you will have to finish a multiplayer race but since there is hardly anyone playing online anymore this can get a little tricky. You might want to ask a friend or look around the DiRT Showdown discussion threads for other people.

After the race you will rank up to level 30 and unlock the three achievements that you get for reaching the respective online rank.

You can also use my profile to go into the singleplayer and fully upgrade every car in the game. I have earned more than enough money through all the grinding so you should be able to max out every car no problem.