Well, since no one else has taken a crack at it.
I got these settings from Dion (small fryz) Holzhiemer a long time ago when I first started in GTL.(thanks bud!) I've never found anything that works better for me tbh, but some others here may disagree. Which is cool.

First off, I do use the Logitech profiler in GTL and GTR2. As you can see from the piccy's I also use 900 degree rotation in GTL. When you do a car setup your wheel lock setting will have to be close to the max of 34 degrees or it will be like steering a ship.
The attached pics show my setup for the profiler, in-game settings, and PLR file settings for the G25.
As always, if you decide to play with these settings please back up your current files/saves, and be aware that your mileage may vary. :yep: