its simple, we need them. (I'm surprised i have seen no one talk about this yet!) how do you expect me to off road without diff locks?
They aren't. Just checked. Hit L to open the debug screen with individual wheel speeds, those speeds are the actual speeds of the wheel not of their forward motion (confirm by rolling car and revving engine), when free wheeling around a corner they still have different values whereas a locked diff would slide on one or both wheels and have identical wheel speeds, tested on the D15 with off road transfer case and differential.
All we have right now are limited slip diffs. You can set a high value to try locking them, but too high causes issues.
would it be hard to make a script so that the speed of the wheels are locked? eg. if left back = 10 right back = 10 ? and just have the drive run to the left back wheel? I'm not to good with coding so if any one knows... give it a shot?
Yeah, there's been a lot of discussion about this before. Apparantly it's really hard to lock them in a way where it will be stable, code-wise. I'm not entirely sure, but I think it created higher forces on the wheel n/b's than usual which made the vehicles more unstable or something, since those forces have no-where to go. I think right now all the 'locked' settings of the diffs do is add friction that stops the wheels from turning independently, which doesn't really cut it. I've tried to look at the code before, but it doesn't litterally measure wheel-speed or anything in a way where you can lock the 2 together. I believe the way they get locked now is by locking the wheel-torque or something. I'm guessing that this is the exact same problem as what causes the parking brake to behave a bit odd(where it sways back and forth a little, rather than just solidly locking the wheels to a dead stop or whatever).
Forces have nowhere to go on a real car hence why people who then attempt to drive on tarmac at full speed with their diff locked find themselves with a nice repair bill after a few miles.