Edited car configuration high speed problem

So I'm making my own ETK I Series configuration and it's fast (a lot), when I test it the car turns itself left or right (this is what "understeering/oversteering" called?) without pressing A or D on keyboard. Also it's AWD, how can I fix it?

 

This is not understeer or oversteer. This is not tracking straight which is often caused by suspension/steering misalignment or weight misbalance.
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Understeer instead refers to when trying to corner, your front wheels losing traction and the car not turning. Oversteer is the opposite when the rear wheels lose traction and the car rotates too far. Try and corner at speed in a covet and you will understeer. Take a corner in the bolide and have the back end spin out and you've oversteered.

 

I tried to stiffen front and rear suspension and that didn't work, is it about race steering or something else?

Also thanks for the info.

 

If it's a custom car we can't fix it, it's your jbeam, I've given you all the points to look at

 

It's a ETK I Series, it wouldn't be my jbeam unless if it was a real-life car.

 

Then why not tell us that in the first place rather than saying you're making your own car which implies custom vehicle custom jbeam. Much more useful to know you're only making a config for the I series. Sure you ain't adjusted suspension alignment wrong?

 

Sorry, my bad. I didn't think that there would be a misunderstanding. Fixed the title and post.

Actually, I tried to adjust front toe, which fixed it a bit (front wheels looks weird though). Then I put it race tires and it's still same.

 

Just bumping but no one knows about the problem?

 

What have you changed in the tuning menu?

 

Turbo pressure, gear ratios, suspension stiffness and height, tire pressure, differentials... That's everything I guess.

Only a big spoiler like Nomi GTR-X solves this problem, I also think it's about toe settings, but negative and positive setups makes it look stupid.

 

Well, try to change again everything you have changed in the suspension one by one to see what can cause your car to turn a bit to right or the left.
If not have you put fat enough tires on it? Maybe to much power can caused it to "drift" with to thin wheels.

 

I tried the change suspension setting, it became unstable (weird jumping over), tires doesn't do much, I even tried drag tires but still same.

 

Well reset the suspension and re-do it it again...

 

I had rally springs and changed them to race-spec ones, still nothing. I will try again next time.

 

Does it only do this under power? Or above a certain speed?

 

Mostly over 200 km/h speed, it's like front is heavier than whole car and pulls it left or right.

 

It actually sounds like it doesn't have enough downforce in the front. A good front splitter might help

 

Brigsby front chin didn't work, I will try with 3000ix version later. (This one 2400ix with 3.0 liter Stage 3 turbo ETK engine.)