Gran Turismo 7 Physics

[mynameis66]

Can you share some controller setups? I'm on controller, and now the steering became lazier and harder (understeering so bad)
I'm suspecting the diff update and suspension (still wondering how the suspension setups slider work, where is stiffer and softer etc)
I'm losing 3s on same track, same car, same settings after the update

I agree with what you are saying regarding the steering being lazier and harder,ive done Tokyo with both my Deltas,nismo and stock engine,more than any other car except for the Tomahawk.lol.I use the tuned Nismo with SH and the stock tuned engine with SM both on stock supension and i find it hard to match my previous lap times,the only positive i found was when the car started to lose traction it was easier to save it than before the update.I think the cars move around more now which is maybe a good thing depending on your style,but also easier to take damage with just the gentlest touch of a barrier.
Im also of the opinion driving style comes into it.Im quite a heavy handed driver,i have issues with my hands so i still use`x` and square to accel and brake but with manual gears,and the previous update physics suited me especially with awd cars.Now i find i cant just sling them about like before,i have to use a little`finesse`to get on.These are just my take on it,everybody drives different.Sorry for the ramble. 👍

 

[TNumbers1946]

Just wanted to say that it seems like they fixed/removed the CSA assist that was always baked in while using controller even if you had the assist set to off. The driver in cockpit view no longer tries to autocorrect itself with no input but now just returns to neutral like how it was in gt sport. This might have an effect for some more than others but I prefer it this way as it gives me more control when on the edge and makes snap oversteer/correction moments less frequent but its all anecdotal so take it with a grain of salt.

 

[Nathan88]

Some people said the same, for me AWD became awful

I’ve been using an R32 on the Tokyo 600 event. Heavy rain to start, then complete 12 laps on SH. I’ve found the car more predictable and easier to place. But I’m also much more cautious with the increased damage. It’s very easy to understeer if you push too hard.

Use sensitivity level 10.

 

[Artremis]

Just wanted to say that it seems like they fixed/removed the CSA assist that was always baked in while using controller even if you had the assist set to off. The driver in cockpit view no longer tries to autocorrect itself with no input but now just returns to neutral like how it was in gt sport. This might have an effect for some more than others but I prefer it this way as it gives me more control when on the edge and makes snap oversteer/correction moments less frequent but its all anecdotal so take it with a grain of salt.

I'm not sure that's the case. Spinning out on controller is still pretty much impossible as long as you countersteer a bit.

 

[Iso Octane]

[As a wheel user] I'm surprised there isn't more celebration about this update. There is a HUGE difference to the way a car responds in oversteer. It's now so much easier to manage and balance a car through a powered slide using the throttle. There's a wider window for throttle inputs, and it's much easier to power out of a slide. Feels great!

Putting into more sciency terms, it's as if the drop off of lateral grip in response to longitudinal wheel slip is much much MUCH less drastic.

I've been playing with the F50 at Suzuka, pre update and post update it does seem to understeer a touch more, but the oversteer is much softer and easier to handle. I do miss that edginess and fear factor a bit though which seems appropriate for a car like that.

FR cars don't seem to understeer anymore than they did.

As you can tell I'm happy with this update. But what I care about most is that it's moving towards better realism.

 

[Galvston]

[As a wheel user] I'm surprised there isn't more celebration about this update. There is a HUGE difference to the way a car responds in oversteer. It's now so much easier to manage and balance a car through a powered slide using the throttle. There's a wider window for throttle inputs, and it's much easier to power out of a slide. Feels great!

Putting into more sciency terms, it's as if the drop off of lateral grip in response to longitudinal wheel slip is much much MUCH less drastic.

I've been playing with the F50 at Suzuka, pre update and post update it does seem to understeer a touch more, but the oversteer is much softer and easier to handle. I do miss that edginess and fear factor a bit though which seems appropriate for a car like that.

FR cars don't seem to understeer anymore than they did.

As you can tell I'm happy with this update. But what I care about most is that it's moving towards better realism.

If it had the negative news, and the physics were ruined, best believe a lot of posters would be over here whining and complaining that they ruined it. Noise would be endless. But as it's something a little more positive, and made the game better, it just gets to be under the rug

 

[ScottPuss20]

Am I crazy or the RR Porsches feel much better to drive now?

Yes they are a lot better now. I drove my tuned 993 Carrera RS last night and the difference was immediately obvious, particularly on corner exit. You don't need to steer as much.

Putting into more sciency terms, it's as if the drop off of lateral grip in response to longitudinal wheel slip is much much MUCH less drastic.

Much less drastic and far more predictable. You no longer feel like you'll get sent to the shadow realm if you pick up the throttle too soon. Unless you're driving a Hellcat-swapped Superbird with way too much torque.

 

[LeGeNd-1]

It baffles me that there can be a generic "suspension geometry" change made to the overall physics system at all.

Surely each car has it's own specific suspension geometry, and surely the physical consequences of applying forces to that geometry are pretty rigidly described by basic high school level physics? This isn't tyre physics where there's all sorts of unknown quantities and room for feel and variance - it's literally basic mechanical physics.

If they're messing around shoving fudge factors that apply to all cars into what is fundamentally a basic system of levers, pivots, springs and dampers then no wonder the physics is all over the place. This is the one part of the physics system I would have expected to be fully and comprehensively defined, so that all the more complex elements like tyres and aero have a solid base to work from.

Yes the language they use baffles me as well. If they say "suspension geometry behaviour" has been adjusted that makes sense, because it applies globally. But each car's own geometry shouldn't be changed, because if you get your physics engine right, you should just input the actual values as IRL and it should handle the same in game.

Seems to me like they are too proud to admit their physics engine is outdated, and instead of rebuilding it from the ground up they keep fudging car parameters to make it suit real life performance numbers (or how they "think" cars should behave).

This old post by @Whistle Snap details all the tyre and suspension parameters in GTS (should be roughly similar to 7). You can see how many extra parameters there are even for something as simple as slip angle mu (coefficient of friction).

Make old cars feel old again in GT7.

Recently took the time to grind 15,000,000 Cr. for the Shelby Daytona and wow, the car feels awful. It just feels like a Gr.3 car with leaf spring suspension. I actually find this issue worse if you drive with a controller, because it just makes the car feel super twitchy. I absolutely agree...

www.gtplanet.net

If I compare to Assetto data.ini files, their parameters are obvious and to the point. No random multipliers with no clear real life equivalent.

Maybe @ddm or @Nenkai can shed some light on us by comparing car physics files from V1.19 to V1.20. What exactly has changed in the suspension files? I recommend the Huracan Gr.3 because it went from being one of the most oversteery to an extreme understeer car now.

 

[Firestone]

Put in some laps with the evo x. Previous patches I compared the SH tires to Pilot 4S tires. They don't feel as such anymore. The CS now more closely resemble PS4S tires while the SH are probably Cup 2.
For the GR3 cars, you can actually get the cars to oversteer on power a lot easier now and oversteer is even more progressive and predictable than before which allows you to toss the car around harder and can reward you for being more aggressive, but can still punish you.

 

[Omiyup]

I’ve been using an R32 on the Tokyo 600 event. Heavy rain to start, then complete 12 laps on SH. I’ve found the car more predictable and easier to place. But I’m also much more cautious with the increased damage. It’s very easy to understeer if you push too hard.

Use sensitivity level 10.

I see. I’m using 34, the front felt it doesn't want to turn as much as I was before the update. When I ramped up the sensitivity to 7, the car oversteer too much (Now I’m using 5, before the update I was using 3)

My car understeering throughout the corner (after the entry until the end). I’m using SS tyres with 705hp car (already detuned the car and still felt the same)

What I felt was better only on MR car, I can do a lap without crashing and confidently step on the gas on RSR with RS tyres

Wanted to see if the setup can eliminate it

 

[grandtourismo]

does anyone have recommended set up for a G29 with the game as it currently stands?

 

[Artremis]

does anyone have recommended set up for a G29 with the game as it currently stands?

Currently running 2/5 (strength/sensitivity) as from what I've tried that gets you the most detail out of the FFB, 3/5 should probably work too if you find the wheel too light.

 

[danardif1]

The Audi R8 Evo with my ACC setups on it now is much closer to the experience on ACC itself. I'd say there is a bit more mid-corner understeer and sometimes there is still more lift-off oversteer than I get from the car in the other game, but there are now even more similarities between the two than before.

Tested it out at Laguna Seca last night, quick 20 minute race with fuel and tyres at 1x. But for the difference in FFB, and there being a bit too much understeer in T1 and the second phase of the Corkscrew, I could have been driving the car on ACC. Laptimes were similar, in the 1.22-23 range that I was in when I raced on ACC at Laguna in my league just a few weeks ago.

 

[CowboyBebop4]

I was comparing back to back performance between GT7 V1.2 and the previous and I find that there is new understeer that I am unable to resolve with compression/rebound settings. It appears I can no longer tune the camber to put more contact patch onto the road under spring compression due to the shift forward in CG under braking. Curious if other people are sensing this. I've been testing with the BMW M4 on Nurburging and find some corners are no longer possible to make compared to my ghost replay from previous version. The understeer is shocking on this M4 and doesn't match the car in reality at all.

Also ceramic brakes are now broken (same as stock). I had to switch to cross-drilled rotors to gain back acceptable braking performance.

Anyone else care to comment?

 

[Omiyup]

I was comparing back to back performance between GT7 V1.2 and the previous and I find that there is new understeer that I am unable to resolve with compression/rebound settings. It appears I can no longer tune the camber to put more contact patch onto the road under spring compression due to the shift forward in CG under braking. Curious if other people are sensing this. I've been testing with the BMW M4 on Nurburging and find some corners are no longer possible to make compared to my ghost replay from previous version. The understeer is shocking on this M4 and doesn't match the car in reality at all.

Also ceramic brakes are now broken (same as stock). I had to switch to cross-drilled rotors to gain back acceptable braking performance.

Anyone else care to comment?

Ah finally someone who also felt the same way as I am. My car was 700pp before, now it’s over 701. But the car felt understeering like crazy and slower by 2s


Also can’t figure how the rallying works on GT7. Is it better on GT Sport? Considering to looked into it 2nd hand market, to compare it with GT7

 

[B80]

I was comparing back to back performance between GT7 V1.2 and the previous and I find that there is new understeer that I am unable to resolve with compression/rebound settings. It appears I can no longer tune the camber to put more contact patch onto the road under spring compression due to the shift forward in CG under braking. Curious if other people are sensing this. I've been testing with the BMW M4 on Nurburging and find some corners are no longer possible to make compared to my ghost replay from previous version. The understeer is shocking on this M4 and doesn't match the car in reality at all.

Also ceramic brakes are now broken (same as stock). I had to switch to cross-drilled rotors to gain back acceptable braking performance.

Anyone else care to comment?

the m4 was a heap of crap imo, stock with no tcs. snap oversteer was a joke (even though m3/4 fxx is savage I guess in real life if you take tcs/stability off...)

but yes, one of the m3/m4 fxx main selling points and noted across reviews irl is it being razor sharp in corners compared to its peers.

 

[Omiyup]

the m4 was a heap of crap imo, stock with no tcs. snap oversteer was a joke (even though m3/4 fxx is savage I guess in real life if you take tcs/stability off...)

but yes, one of the m3/m4 fxx main selling points and noted across reviews irl is it being razor sharp in corners compared to its peers.

I think PD just solving with adding understeer and done. Almost all cars I used already tuned with under/oversteer precision for my driving and now all ruined after the update

 

[DC5Remy]

does anyone have recommended set up for a G29 with the game as it currently stands?

4-2 is what I’m using and it feels great.

 

[B80]

I think PD just solving with adding understeer and done. Almost all cars I used already tuned with under/oversteer precision for my driving and now all ruined after the update

Really, that drastic? Looking forward to getting the wheel out again, but been too busy last few weeks so haven't had chance to test since 1.19. From other comments sounds promising.. not sure if stock setups now OK since 1.20. I was using the masters tunes for most cars.

M4 was abysmal as stock, even when ramping up tcs.

 

[ScottPuss20]

I drove my tuned Porsche 911 GT3 996 last night for the WTC600 race on Tokyo Expressway and it feels soo much better now. The car actually handles like a Porsche with excellent handling and traction that puts almost everything to shame. The steering was properly weighted, the rotation through the corner was consistent and it was easy to catch slides. What an improvement.

 

[Monkey Man]

Ya, was night-and-day for Z28 Gaming too bro'.

He couldn't drive the Gp 3 Audi before; gave up long ago. Now he loves it!

 

[F30clubman]

I've been driving the Countach 25th Anniversary this morning. Used to be extremely understeered. Now it turns when it should, the wide tyres allow poweroversteer, and it's fun to drive!

While I did not like race cars on slicks before, the slick tyre grip seems to be more realistic now. Feels like the tyre drift angle is higher, there is more flex in the tyres and the transition to lateral traction loss is more gradual. Still there is a risk to spin out. This makes all RWD cars more lively and much more enjoyable then before 1.20.

Also do the tyres lock up less quickly under braking without ABS, at least with my G29 wheel (only strange thing here is the huge smoke that keeps developping for a while after the lock up).

FWD seems to be unaffected. Fun factor of FF cars = still 0.

 

[anh165]

I drove my tuned Porsche 911 GT3 996 last night for the WTC600 race on Tokyo Expressway and it feels soo much better now. The car actually handles like a Porsche with excellent handling and traction that puts almost everything to shame. The steering was properly weighted, the rotation through the corner was consistent and it was easy to catch slides. What an improvement.

You probably did not drive the car hard enough ...

Take a car and drive it at 8/10ths or more, the AI cars become faster, and GT7 tire zero-grip physics kicks-in at random times ...

 

[RacingFan1]

Physics definitely changed now. I like them more.
Rear of the cars now have proper grip I think. Before they didnt have enough grip, they were a bit too tail happy.
Of course for some this will result in understeer, but that can be solved by setup.

Well, I'm on controller and on TCS 1 and ABS default
I used R34 on tsukuba 2 days ago and I did 57.4 (700pp, 705hp on Sport Soft). Now, I can barely managed to get 1 mins (the update even gave me increased PP by 0.34). The car became sooooo understeer (especially on the middle of the cornering), the setup still same as 2 days ago (controller sensitivity on 3, car tuning is still same)

Any solutions?

Turn off TCS

I think PD just solving with adding understeer and done. Almost all cars I used already tuned with under/oversteer precision for my driving and now all ruined after the update

If you say you use a controller and TCS on then... Just try a wheel and TCS off and then realise the understeer is only due to your setup

 

[anh165]

Unless you use wide tyres and too low of ride height due to that suspension bug, none of the car suspension settings makes much of a difference in handling, it's all psychological.

Physics definitely changed now. I like them more.
Rear of the cars now have proper grip I think. Before they didnt have enough grip, they were a bit too tail happy.
Of course for some this will result in understeer, but that can be solved by setup.


Turn off TCS


If you say you use a controller and TCS on then... Just try a wheel and TCS off and then realise the understeer is only due to your setup

Try/buy a wheel?? ...what kind of advice is that?

And why is it ok for you to say the rear tires did not have 'proper grip' before the update, yet someone understeering after the update needs to spend £$$£ on a wheel rig to correct it?

 

[Nebuc72]

Unless you use wide tyres and too low of ride height due to that suspension bug, none of the car suspension settings makes much of a difference in handling, it's all psychological.

Come on man... the suspension bug? You mean when your wheels get jammed in the fenders because they cannot physically turn? Yeah, real buggy. Absolutely not realistic at all.

 

[RacingFan1]

Unless you use wide tyres and too low of ride height due to that suspension bug, none of the car suspension settings makes much of a difference in handling, it's all psychological.


Try/buy a wheel?? ...what kind of advice is that?

And why is it ok for you to say the rear tires did not have 'proper grip' before the update, yet someone understeering after the update needs to spend £$$£ on a wheel rig to correct it?

It is well known that controllers dont have the steering capacity of wheels. They tend to be more understeery than wheels. He seems to say that there's too much understeer in the game but in reality it's a lot about his controller.
Now if you use a wheel you don't really see understeer from what i've seen. In some cars maybe yes but not in general. Drive FR/MR/RR cars and usually you don't get understeer
Before the update many cars (mostly tail happy ones) had appalling grip in low speed corners, it was something they needed to address.

 

[AlexWilmot]

Unless you use wide tyres and too low of ride height due to that suspension bug, none of the car suspension settings makes much of a difference in handling, it's all psychological.

Sounds like you don't know what you're doing, I'd suggest you do some reading,

https://www.gran-turismo.com/us/gt7/apex/settings/01

This is handy

 

[anh165]

Sounds like you don't know what you're doing, I'd suggest you do some reading,

https://www.gran-turismo.com/us/gt7/apex/settings/01

This is handy

Thanks, but that's all based on the assumption the suspension modelling on a PS4/PS5 has any connection to real suspension behaviour.

Real car / racing teams use simulations to aid design and predict how their own car will behave with far far far more sophisticated computation software, and even so there is a chance that the computer got it wrong...

... much less a sim racer sliding the anti-roll back stiffness on his G27 steering wheel...

 

[Galvston]

Come on man... the suspension bug? You mean when your wheels get jammed in the fenders because they cannot physically turn? Yeah, real buggy. Absolutely not realistic at all.

everything is a bug in gt7, anything people don't like will be called a bug lol