As seen in the evidence provided below the kerbs in certain parts of the track are very similar to Mugello and will send your car into a random spin. They also are extremely slippery in areas
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Can comfirm as per my rivals rime and stream
No amount of tuning solves this
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At which point in your 59 minute video did this happen?
Pretty clear to understand from what I read.
Something I’ve noticed watching telemetry, it’s gonna take work in dampers to smooth out the oscillation in the suspension that causes the curb spins
the tire gets stuck maxed out and (for some reason) forza sees it as extremely little friction and allows the wheel to freespin
this is probably the same bug that affects FWD and AWD vehicles causing a rear tire when lifted off the ground slightly to spin up super fast
All tracks in the game have this issue over curbs, there’s nothing new there. So it has to be physics related to the suspension/tire model
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Have to say the curbs are deadly especially exit t8 on to small straight
T8 needs a look at in my opinion
they really need to hire somebody explaining them that Kerbs don’t act like Bananas in Mario Kart ;/
Found this cool easter egg on the curb for the 4th turn:
As for the curbs on this track, I think I know what’s going on. Most of them seem to be using a random collision noise generator, the thing they supposedly stopped using in FM2023 because now the tyre model can allegedly take real bumps well.
There are a few curbs, like the curbs on the braking zone for turns 10A and 10B as well as the big exit curb, that are correctly modeled and cars seem to be able to drive pretty well over those.
A lot of tracks still seem to be using this random collision noise generator and those are usually the tracks that drive the worst. Laguna Seca, for example, drives pretty nice because it uses real curbs and it was the track they used to showcase the new tyre collsion model, but Silverstone’s curbs feel pretty atrocious because they’re still using that noise generator.
But then there’s Hakone that has the worst curbs of any track, as a new track introduced for this game… I think it’s due to the bumps being too small and the tyre collisions still not being fast enough to keep up with how quickly you’re driving over those bumps, or it could be that it still has the random collision noise on top of those bumps. Wouldn’t put it past them…
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To the surprise of no one
Similar post about tires going in road and rumble strips random tracks.
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I thought the track felt rather slippery good to know it’s not just me or my setup. I voted
Can you get your data out to work?
I will run the suspension data through a Fourier transform in MATLAB to show if it’s random or not!
I’ve been to Road Atlanta many times. The curbs are super tall, but you will never see a car randomly spin after touching one like they do in Forza.
They should absolutely upset the car and cause a big bounce, but not instantly spin you.
I think you’re onto something with the curb friction being off.
There seems to be a number of tracks with one curb that spins the rear end if you hit it wrong, even front-wheel-drive cars. Mugello, Watkins, Daytona Road, Brands Indy are the ones that come to mind.
Finally someone who gets to the point. The big problem with this game is in the physics of the suspension and tires and the force feedback goes with it. They need to make a big patch for this instead of putting new circuits and cars
They can work on both elements. The track and car teams won’t be working on force feedback etc.
Just touching a curb should never spin a car. This happens constantly in T3/5/8/and to a lesser extent the exit of T1.
I believe the issue is with how the tires interact with the curbs, almost as if the tire loses contact entirely and all friction dies. so you just spin.
This should not happen, ever.
I’m glad to see this thread; Road Atlanta’s curbs are really bruising my ego, especially T5 as in the OP’s video…
It’s not like a Mugello-Curse situation, just that right side of curbing in T5 giving me trouble in any car I use regardless of how I tune the dampers, springs, and ride height.
On a wheel, the feedback comes through like the suspension completely unloads then can’t handle the compressions, so it’s just crashing and skating with near total loss in traction.
Braking on T5 feels similar to braking while having the passenger rear tire dipping in grass
We think we have found what is causing the curbs and spinning out issues. We are currently working on this and testing the fix for a future release.
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