I'm pointing out not that all cars don't have the same steering degrees but that something is wonky, I shouldn't have to turn the wheel 90 degrees for a minor steering movement, then move to another car and have different results (one car undrivable, other car somewhat fine), it's like a difference of linearity on the steering rack, it's not matching up correctly.
You're talking points that are effectively beginner stuff too, I've been sim racing with this same wheel since I bought it in 2010, nearly every racing title on the market from GTR2, iRacing, Rfactor, Rfactor 2, Race 07 NetKar Pro, Assetto Corsa, Ferrari Virtual Academy, Project Cars Richard Burns Rally, Dirt 2, Dirt3, Dirt Rally, F1 2010, F1 2011, F1 2012, Forza Horizon 4, Test Drive Unlimited 1-2, and of course GT5/GT6 on the PS3.
I know how to setup my wheel and I know how to get good settings in a game, I also have owned many cars and raced karts while being a lifelong motorsport fan, I have books on driving technique and my father + family friends have competed in rally, which I've followed all my life as I live in South Wales, there are WRC championship rally stages within walking distance of my home, so I'm not a newbie coming into this.
I feel like I'm being addressed as a confused newbie. I'm not able to get co nsistent working settings for each car with the soft lock, I'm having to adjust on a per car basis because the cars are not reacting realisically. This isn't a problem I can't overcome and I've got by, it's just not working as it does in iRacing or Assetto Corsa for example (set and forget).. The biggest issue is the FFB providing forces incorrectly, hard to enjoy the game that way.. If it was just self aligning torque but applied correctly it would be ok, that's not too disimilar to what you feel in a real car.