If you like a lot of force feedback, or if force feedback is very important to you, you might want to try either the Thrustmaster TX, Thrustmaster T500RS or better still, a Fanatec wheel and pedals setup. There are various opinions about setting up a Logitech G27, G29, or G920 wheel for iRacing. Most of them will work in one way or another.

For the older controllers like the G27

Jul 10, 2012 iRacing – FergoTech iRacing Force Feedback Clipping Tool. FergoTech did a little update on his iRacing FFB Tool to output clipping data through the serial port. That allowed him to use the same TM1638 display of his “DIY Shiftlights and Dashboard” project to show Force Feedback clipping information in real time, without having to use the.
Settings, check Enable Force Feedback and put the strength somewhere between 5 and 15 or so. Higher values will have stronger Force Feedback, but can lead to some problems. I usually limit that range to 7-12 depending on the car, but that is one setting that can.
Force Feedback Diagnostic Program This is a small utility program you can download to test the force feedback capabilities of your joystick. If FS Force doesn't seem to be working properly, you can use this utility to test your joystick, which can be helpful in determining if the problem is with FS Force, your system, or your joystick.

Open theLogitech Profiler:

Click Options..Global Device Setting:

Set Overall Effects Strength to 100%

Set Spring Effects Strength to 0%

Set Damper Effect Strength to 0%

Enable Centering Spring in Force Feedback Games - uncheck

Set Degrees of Rotation to 900%

The newer G29, G920 and G930's for example - we would recommend leaving the defaults.

In the iRacing Software

Launch the SIM (in a Test session for example)

Click Options and in the Drive tab

Set 'Enable Force Feedback' to on

Set Force Feedback Strength to 20% (you can adjust to your liking)

Set Damping to 0%

Also please note the auto option for setting the force levels. Although not Logitech specific, it is the quickest way to get your FFB feeling good.

Anyone Can Race

Most current-generation PCs will perform effectively on iRacing.com. In the event that a member owns an older computer, an upgraded graphics card could potentially be all that is required to enable the iRacing online driving simulator to operate successfully. Mac users can run iRacing using Windows on Bootcamp.

Iracing Force Feedback Test 1.82

For The Best Experience

However, the member will require a controller to enjoy the full range of experiences afforded by iRacing’s racing simulator. Currently, there are several options available, accommodating nearly any budget. A host of steering wheel/pedal combos, gamepads, joysticks, mouse-based control systems, and any version of the Microsoft Windows operating system, supporting touch screen driving are compatible with iRacing.com.

Force Feedback Drivers

For the most intense online racing experience, however, iRacing suggests a force-feedback steering wheel/pedal control system, when compared with other types of controllers. Some suggested, readily available forced feedback/pedal sets combo are listed on our Wheel & Controllers page.

Force Feedback Joystick

Force Feedback Vest

iRacing also supports many Virtual Reality headsets including popular models from Oculus and HTC.

Iracing Force Feedback Test Program