Logitech G27 wheel settings

Being yet extremely popular and now a cheap purchase, it is not strange to take a look on G27 wheel settings again. Jason Spencer did a wonderful job with a detailed tutorial about how to configure and make the wheel work, probably better than expected. It should make a big difference for some iracers allowing them to fight for higher positions.

First of all, you need the Logitech Profiler software running for the wheel to work properly in game. If it’s not, you’ll notice in game the wheel is jerky with a limited range of motion. You will probably want to make a specific profile for iracing in the Logitech Profiler software. In the Logitech Profiler, click on the Profile tab at the top left and select New and fill in the blanks. For the game executable path you will want to point it to iRacingSim64DX11.exe if you’re using the 64-bit, directX 11 version of iracing, or iRacingSim64.exe for the 64-bit, directX 9 version of iracing. Once you’re done creating your profile for iracing you want to click on the Edit tab and select Specific Game Settings and make sure you have these settings:

Overall Effects Strength: 100%
Spring Effect Strength: 0%
Damper Effect Strength: 100%

Enable Centering Spring: Unchecked
Centering Spring Strength: 100%

Use Special Steering Wheel Settings: Checked
Report Combined Pedals: Unchecked
Degrees of Rotation: 900 degrees

Use Special Game Settings: Checked
Allow Game to Adjust Settings: Checked

Leave damper mode setting at default value of 0.

Be sure to save and exit. Now, we are all set configuring the wheel for the sim, all we need to do now is find our ffb settings to use in the sim and make sure we have our wheel configured properly. The first thing we need to do is download the wheel check tool. This will help us find the value to set our minimum force setting to. Minimum force, from my understanding, basically just applies a small amount of constant force to the wheel to help diminish the deadzone in the center. Navigate to this forum page and download WheelCheck_1_81.zip at the bottom of the first thread.


Open the wheel check tool. Before you do anything make sure your wheel isn’t obstructed by anything. This tool will move the wheel back and forth for 20 to 30 seconds during the testing. Where it says Spring Force you want to click the scrolldown box and change it from Disabled to “Step Log 2(linear force test)”. Now, don’t touch the wheel until it is done testing.

Exit out of the Wheel Check tool and navigate to your “C:\Users\*Username*\Documents\” folder and open the log2.csv file. You will see five columns of values. There is force, startX, endX, deltaX, deltaXDeg. We are looking for the force value that corresponds to the final deltaX value of 0. So, in the DeltaX column of numbers you want to find the last row that has a 0. Now take note of the value of the force column in that same row. This is your Minimum Force value. The last 0 in my deltaX column corresponded to a force value of 1600. So, I would set my minimum force to 16 percent in the sim.

For the force feedback in the sim these are roughly the settings I use.
Enable Force Feedback: Checked
Use Linear Mode: Unchecked Dampen Oscillations: Checked
Strength: Anywhere from 4 to 12. This is car dependent so you need to pay attention to the force meter in the top right of the screen while you are driving. You will see a box that displays the Frames Per Second, Latency, Quality, Service, Paging File, and Force respectively. If the force(F) meter gets into the red or yellow, back your force feedback setting down a little bit.
Damping: Anywhere from 0 to 25 percent. Most people will say 0 percent. Right now I am using 15%.
Min Force: 16%
Edit: Dampen Oscillations: Checked
Edit: Linear Force Mode: Unchecked

Now just calibrate your wheel and you should be all set to go. When I calibrate the wheel I make sure I center it back to Pos: 50.0% Raw:8185 and then when it measures the wheels range I turn the wheel left to exactly 900 degrees.

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