Bottoming out in Forza is extremely glitchy. Sometimes it has an effect, sometimes it doesn’t. Probably because of a poor under body collision detection system.
However this is an easy fix. Turn 10 just need to code in an exception to the tire friction in relation to suspension compression.
(When X suspension = 100% compression, corresponding tire’s friction = 0%)
I don’t think it should be anywhere near that black-and-white, but I agree it could use a looking-at. Seems like you have to really exceed the 1.00 by a large margin (I’d wager somewhere in the 1.50 neighborhood for it to have a noticeable impact on handling, and even then most cars will just shrug it off. They may have it set up so 1.00 is the maximum compression before the suspension contacts the bump stops, in which case the current system may be fairly reasonable. No way I can think of to test it, however.
Related: I’d like to see a lot more friction when the underside of the car does contact something. Even a small amount of contact should feel like you just dropped anchor, not just look like you tossed a sparkler under the car. The amount of drag you get when running up against guard rails would be a good starting point, I’d think.
I don’t think it can be that simple though, what happens in the instance when your traveling fast and the track tacks a sudden climb in altitude and the suspension is too soft? compression would likely shoot to 100% but does that mean that friction would be at 0? wouldn’t the tires at that point be extremely overloaded like 200% like it does now? I can see hitting a tall rumble strip and the suspension pushing the car away from the ground causing that corner of the car to lift momentarily off the ground causing a 0 friction since there’s no contact.
I’m no physicist though so I could be completely wrong on this. and I or we may be confusing friction with grip or other variables.
Totally agree that it’s a very simplistic method to fix the problem & I agree that the method is physically incorrect, however the problem lies with the collision detection. You can tell 1.00 is the body dragging on the ground because the car begins to spark underneath. It’s an artificial way to simulate the car spinning out due to bottoming out but I can’t see Turn 10 fixing the collision detection so I think this is the only (baked) way to do it.
I absolutely agree with you here Evan. If you as so much even touch ac curb, and the car lifts off by a few inches - instead of landing back softly like it would in real life, you just hear a loud thud. So the suspension bottoms out even in situations where it shouldn’t. Plus when cars catch air and land, they should bounce at least once or twice, depending on the suspension settings. The rebound does not feel realistic. PCARS2 has really great suspension movement and the bottoming out never feels overdone.
So number one: suspensions bottom out way too easily in Forza 7, and number two: why is the sound effect so strangely loud? It sounds as if the chassis is breaking apart. You’re inside the car; the suspension bottoming out never sounds the way it does in Forza.
Tune your physics please T10 and please get rid of the overly loud bottoming out sound effect. Off-topic: wobbly wipers are starting to get on my nerves. Majority of cars have shaky wipers at 80+ km/h? Who at the design team thought that’s realistic?
Wipers on my Miata start shaking slightly at highway speeds (so 70ish MPH) if there’s any sort of headwind. Don’t think I would have noticed if people hadn’t complained about it in this game. My personal “who thought this was a good idea?” is the swaying exhaust pipes. Movement and vibration I can understand, but they look like they’re trying to charm a snake.
Bahahah…LOL! trying to charm a snake
I too think that’s really odd - I’ve never seen that happening in real life.
The wiper shaking should not be there on expensive exotic cars, don’t you think? I have owned everything from an old RX-7 to a beat up Civic to an M3 and Skyline R33 - nope, none of them had wiper wobble and shaking, even at really high speeds.
The idea of objects moving is fantastic but it’s over exaggerated. Older Mini Cooper’s wing mirrors would shake at 60 MPH however.
Easiest fix is to have a one to ten slider for camera shake, movement, motion blur and sliders as well as object shake, movement and motion blur.
Is this what is also causing almost every car I drive to lose traction in the rear end?
I’m having issues with almost ALL cars with the rear end breaking lose very frustrating and forcinge to use stability control.
Any help here guys/gals would be greatly appreciated as I love driving Forza 7 on my Fanatec.
What’s the cause of the overseer? On throttle or off throttle?
Sorry, have been at the beach last 3 days.
Off throttle corner entry oversteer is overwhelming, specifically with race cars running higher downforce.
GT3s shouldn’t stick to the tarmac like F1 cars but they should have considerably more traction than Forza simulates.
I assume the work around would be tuning the diffs but nothing seems to help other than enabling stability control and that’s no fun.
Tuning the differential is really beneficial. Porsche use a differential lock percentage of like 72/100 (acceleration/deceleration) if I’m correct. Increasing the deceleration on the differential will essentially kill any off, throttle oversteer.
GT’s should have more traction from what Forza stimulates but from looking at the fuel consumption and tire wear per lap, it looks like Forza’s GT cars are closer to being on heavy fuel, hard tire stints.
If you’re having trouble with traction, try the oul’ 40/1 anti-roll bars (front/rear). Also FM7 doesn’t like a lot of camber. I think I’m running around 1.5 front 1.4 rear on my GT cars, though I’d have to check. Reducing the front rebound will make the rear squat more under acceleration too. Always run the rear tire pressure at 28.0 PSI. Try reducing the rear springs as well if that helps.
I think there won’t come a fix for this. The game marks your lap dirty if your bottoming out heavy. In my opinion that’s the proof that the engine is not able to make a difference between a normal collision and an underfloor collision.
Sadly, I think you’re right.
Yeah, I’ll echo that. Definitely something off about the bottoming out physics and how the game registers it.
I have to say i never noticed this myself but my friend told me the spring telemetry doesnt bottom out. He was right.
I don’t really notice TBH, if car is tuned correctly you shouldn’t need to worry about bottoming out physics IMO. Shouldn’t even reach end of suspension travel (bump stops), because that’s when you’ll notice car can be very unforgiving over kerbs, etc.
A common mistake folks tend to make is to drop their cars (min ride height) without a corresponding increase in Spring rate and damping. I haven’t found any meaningful performance having a super low ride height in Forza, however there is performance in having suspension tune with enough travel and underbody clearance even when pounding kerb like turn 1 at Hockenheim. In advanced Sims, super low ride height can be worthwhile trade-off for better CoG, roll centre, underbody aero, etc but Forza …… eh not so much.
BTW, I also dislike the “snake charming” exhausts and wobbly wipers in FM7. The wings movements under load can stay.
True, my issues with bottoming out r 8 month ago while driving with gamepad - porsches at original tuning tended to move up the inside frontwheel in fast corners and smashed it back on the road that you almost lost control (curva grande at monza for example). No issues at all since using a wheel.
For some reason low ride height in Forza doesn’t do much, but there are some cars that are just low no matter what you do. The Lotus 3 eleven us a good example. I don’t think ride height has enough if any effect on downforce or drag in Forza. It’s pretty much just to lower the centre of gravity like you said.
The only time the really poor bottoming out physics genome noticeable in Forza is over curbs or at rankings like Daytona, especially in F1 and cars of that ilk.
Exactly such a non issue, we may have finally run out of things to complain about lol