If the wheel is trying to decenter, it's usually some kind of "reverse forces" setting which is turned on and shouldn't be. Odd to see that on PS3. I've never tried GAS on the PS3 so not sure. My T500 experiences (on PC from a while back, not played GAS in months): I tend to use around 70% force setting with my T500 in Codemasters games, but it's easy enough to switch on the fly during racing between 50-100% and see what feels nicest. Wheel weight can always be set to 0% for the T500 unless you really like fighting a heavy wheel. Vibration depends on the exact Codies game, I tend to use 20-30% in their offroad games, but needed something like 50% in GRiD Autosport I think. I've standardized on 0% deadzones, 0 linearity, 100% saturation of brake/accelerator. Then I leave my Thrustmaster wheel on 900 degrees in drivers and set something between 50-60% steering saturation in game. 50% means effectively 450 degrees in game, 60% means 540 degrees. I prefer 540 where possible (e.g. using that in DiRT Rally), but if that feels a bit odd then 450 degrees is better. Also I found GRiD Autosport is horrible at giving you cues you are locking up the brakes, which results in a weird floaty understeer. Setting ABS to on in game solves that without feeling odd, so I recommend using ABS enabled.