With high powered cars, you get high powered problems :/ When I spawn my covet, two rear beams are broken, there is a lot of stress on the body, wings and hood and when I drive, it drives bad, more beams will break. I am trying to get the weight as low as possible, but when I go under .4 for nodeweight, it collapses. Can anyone help me setting this up? I am looking to get another cars suspension under the car and trying to get the body stress free :/ I included reference pics from the rally covet to make it even clearer.
Use less beam spring on connecting nodes. It's because things start to get unstable when you have high beam spring and low node weight.
This is a bit of a crap answer, but it depends on the weight and beam spring value. Make sure there aren't any beams that you are unaware of, since the total beam spring of everything can be a factor as well as individual beams.
When you put the SBR suspension in the rear of the covet did you add your own beams with properties you made or did you put them in a section that already had properties. It may help to post a photo of the rear of the car pointing at the broken beams or bring up the broken beams debug menu.