It may have nothing to do with the car at all but the height map resolution of maps with too low of FFB smoothing. Try on smallgrid and see if it is still there.
Sadly it does, also other exported vehicles does not have such effect. As I was up early, here is short clips, first pink car number two that is straight export from AM and attached to this post: ingame footage Then SBR4 which is closest to that car: Slow smoothing 270, fast smoothing 220 Strength slow 100, fast 240 FFB rate anything between 100-2000Hz same happens. I'm using Full updates as with quick updates FFB just does not work correctly at all with T150. After doing a lot of testing, I can't find any other reason, but to vehicle to be cause of this, I think it could be a bug or maybe a limitation of exporter, but my understanding of beam structures is quite limited, especially when it comes to suspensions. If such effect does not happen with other wheels, then it of course would be possible limitation with my hardware, maybe there is something that makes my wheel go nuts, but no other vehicles do it, only two different exported supercar shapes (first one is a mod, this second attached to this post is official supercar bodytype. Everything seems to point out to direction that issue is something exporter related, but is it really so, I'm limited to one sample here, if you find time to do short test drive of that vehicle and if it does not have that effect, then with sample size of two we are both confused, but can suspect it being more of my end issue
Yes, this looks like a case of testing the extremes of the exporter. The car has super lightweight and small suspension, (perhaps due to the high technology used, I cant tell with the exported car alone), making it not so stiff, and then has massively wide tires. There is no instability it just looks to me like the wheels get into some resonant shuddering. From a modding perspective, increasing the suspension weight and spring, and adding dampers from the hub nodes (tie rod end and brake caliper) to the chassis (not to the steering rack!) might help. But of course the damping will also slow the steering down. Also this car puts a smile on my face... what a pig of a supercar
There is .car file in the zip, you can import that to Automation if needed. First chic car is a rally car, that just looks supercar, this latter is more of the supercar, but indeed both are meant to bring smiles to people's faces, tongue is always in a cheek, permanent install Pushrod suspension, that should be same as double wishbone, however no matter if I put in solid axle, there still is same problems. What I'm thinking that supercar bodyshape might be difficult for exporter to handle as two different supercar shapes, but with completely different suspension settings does the same and changing suspension settings is not really changing this behavior much. I try to work more on first with information aljowen and you have provided, it might just need complete rework of suspension. Maybe one thing to test would be changing to universal wheels and see what happens. Need to work more on this later today. Thx from looking and from tips, with little knowledge even small tug to correct direction is big help!
Our wheels are lighter in the tire nodes and so they tend to have less inertia to cause shaking than the ones Automation generates (and we did it that way specifically for this reason). So you might have better results wrt shaking. And yes it may not matter what suspension you choose, it will possibly make them all too small due to the supercar base chassis being lightweight. I'm not entirely sure about, that is more Automation's end than mine.
That was it, tire nodes are too heavy, I did quite bit of testing and tires are pretty much what solves this issue. Of course suspension etc. values need to be checked too, but clearly tires were responsible of this issue, huge thanks from pointing out to correct direction!