How to get to the file. Go to where ever you have saved your game more than likely it will be in you steam folder. 1. Steam 2. Steam apps 3. Common 4. DiRT Rally 5. Forcefeedback 6. Open effectssetup.xml in note pad (backup file just in case!!) 7. Edit file with above description from <ffbsuspension device="pad" to <ffbsuspension device="wheel" eg. For Both R1 and L1 they are located directly in the middle of the file and then save the file after words.
Again Mad Props to MSPORTDAN!!!!!
Please post what wheel you have and if it did work! I have a Thrustmaster T500rs. This did work on other wheels as well from what I had read from racedepartment.