FM7's physic is ... weird

Forza Motorsport Legacy Motorsport FM7 Discussion
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hi everyone, after a while im back in FM … i played all the FM from 1 to 4 and FH1 but i jumped the 8th gen FM because i was bored of it, and everybody told me FM5 was bad, and i ve got enough of the MP choas, i got a wheel and turn to proper sim like Pcars or assetto corsa or dirt rally and F1 games , then i bough FH3 and loved it (even end up in the top 20 in the FRC 2016 the weeks i could participate), but i didnt bought FM7 at launch because i was told the FFB was [Mod Edit - Abbreviated profanity, profanity and profanity that is disguised but still alludes to the words are not permitted - D]

but now i back on it, mostly because of the FFB update and futur penalty system that supposedly will clean up the MP… and damn … the physic is weird …

im not even talking about wheel gameplay here … even on controller … its nothing like … FM3 or 4 … actually i was so suprised how bad im in FM7 … i boot up my 360 and FM3 and 4 just to see if it was me that really lost pace … but no FM3 and 4 feel perfect … ive done multiple hotlaps and no drama like in FM7

where FM3 and 4 felt like an simplification of some real car behavior … FM7 is erratic, sometime illogical, … there weird snap of oversteer while braking (monza ericson style but without the crash) or just simply when i lift of the throttle … the steering is weird too … sometime it become very sharp and i feel some kind of latence

but the worst is that weird moment in the corners where the car looks like is slide on 4 wheels and if u do anything like braking or touch the gaz u ll not make the corner

i dont know what they ve done to the physic in all those years but they didnt make it more realistic … its actually easier to drive in Pcars 2 … it feel like they make it hard for the sack of having a hard physic

finally FH feel more realistic, yes i know cars can take corners at crazy speed, but in term of feel, its better, more logical, FM3 and 4 feel a lot like FH actually but with more realistic corner speed and more unforgiving braking or throttle control … FM7 is just weird

3 Likes
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what feels ‘better’ vs what’s realistic are two very different things. if fm7 doesn’t appeal to your tastes, there are many other games to consider. in my opinion, the base physics model in fm7 is quite good (good in contrast with actual real-world driving not other racing games). i hope they will make it more nuanced and ‘hardcore’ over time.

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Cars in game that I’ve driven in real life handle how I expect them to from experience. Other cars in game by and large handle in a way I like. Every Forza game after FM4 has handled better than FM4.

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We have a 2.8l BMW Z3 irl & the 3.2l version in the game handles very similar to our real life car (Once you throw on restrictor plates & 248’s front & rear).

Forza’s base physics are fantastic. Simple cars shine in Forza such as the Z3 & old muscle cars. Where Forza goes wrong is not simulating stuff like ERS, Kers, DRS, Active Aero, etc, etc

One amazing feature that is also neglected are the handicaps. If you feel a car should have more oversteer or understeer, you can just change the physics to what you like.

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well when i say better i mean its more logical from a simplify realisty that is suppose to be for a sim cade game … to me game like forza shouldnt be harder then something like Pcars
and FM3 is like that … like i said some kind of more unforgiving FH with realistic corner speed

but yeap i might just be the controls i need to get used to

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The physics are ok. The way the controller handles the steering is weird. Much of tuning is about making the suspension play nicely with the steering.

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Not sure it will work for you in all cases for this problem “there weird snap of oversteer while braking (monza ericson style but without the crash) or just simply when i lift of the throttle”. Try adding the racing differential and setting acceleration 50% and deceleration 70% as a starting point. These settings allow me to more aggressively turn into a corner (and even trail brake) without the car swapping ends. I should mention this is for rear drive cars. Hope this helps you as much as it has helped me enjoy FM7 with the new ffb.

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By skipping several revisions you missed the evolution of the physics model. Almost everyone who played FM4 remembers its physics model fondly, because it was simpler. I can put in much faster laps in FM4 because the cars were easier to control.

The FM7 model is logical, but it is much more unforgiving. I enjoy it, but it is tougher.

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thats my point, why make the game harder for the sack of making it harder … harder then some sim so called tough sim like Pcars 2 … at this point why not make a proper sim like physic …

but you re right i know its probably me that need to get use to it

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woaw i found something … STM … its makes the driving so much better … no more snap of oversteer under braking … it finally feel like it should to me … but its weird the thing doesnt seems to light up … i ve 10 laps of the nordschleife and the warning on the hud didnt light ones … except when i pull the ebrake … but the physic is totally changed … it feels really good on the wheel too with the new FFB i find

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Stability control (STM) does indeed prevent most spins. FM7 does a great job allowing many levels of immersion.

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FFB is now very good, for GT3 cars, it misses TC settings, there is only one global setting, but in real car (and i rF2, ACC, Raceroom), we can choose between 11 settings…

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The oversteer snap in certain cars is ridiculous. On the 2016 ACR, a car known for being the most planted production car on the market by race car drivers, is sliding around like a drift car and understeering, which are 2 things that a Viper absolutely dont do.

Also ive noticed a weird bias toward mid engine cars. In general any mid engine car will understeer less then any of my Vipers (which is so wrong it hurts). When you have less weight over the front tires you have less traction, therefore, less braking and cornering capability. The current Viper ACR is by in large the best cornering and braking production car you can buy which is why it holds so many track records over anything else, including million dollar mid engine cars with 300+ more hp.

I was in a race in S class on Dubai short (forget what its called but theres only high speed corners). Im in first place hitting my second lap and into the first corner which for me in my 2016 ACR i can hit it about 140 in the middle of the corner, and here comes this noble with no downforce bits right on my tail in the corner. You dont have to be an engineer or a physicist to know that not only a car without downforce is not taking a corner like that at 140+ mph especially a mid engine car with most of its weight in the back of the car. That car would have hit the wall almost straight on.
If i can only hit that corner at 140 ish with hours of tuning for that track specifically, that noble, with no downforce could hit that corner at about 110 at best with race slicks. Only if it had the same 1200 or so lbs of downforce and on slicks could it hit that corner at 140.

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Which track records exactly?

Nordschleife production car lap times:
2017 Dodge Viper ACR: 7:01.3
2007 Radical SR8 LM: 6:48.28
2016 Porsche 911 GT2 RS: 6:47.25
2018 Lamborghini Aventador LP770-4 SVJ: 6:44.97

For sure, there’s no need to be and engineer or a physicist to tell that you have no clue what you’re talking about.

According to your theory, if you put loads of sand bags in a car, it will make that car corner faster, because the car will then have more lbs of downforce, right?? Nope.

Breaking news: more weight does not only produce more downforce, it also produces more centrifugal force.

Which explains why, for instance, your beloved Viper ACR gets blown in real life on the Nordschleife by the Radical SR8. Because, despite the SR8 having 200 less horsepower than the Viper, it also has less than half the curb weight.

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Isn’t weight more evenly distributed across all four tires in a MR layout yielding more grip? I also looked up that the rear end in FR layout doesn’t play a big part in rotating the car. This is where you’re getting your understeer from. The centrifugal force produced by the engine in the MR layout causes a yaw effect at the rear axle. This allows the car to rotate more around corners. The M600 has the more balanced layout, and about 500+ lbs on the ACR which is rated with the same amount of horsepower. Yeah okay the M600 has about 5 more horsepower to be precise.

1 Like
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Looking at some photos of the Noble online, it looks like it probably provides some front aero downforce in stock form? I haven’t been able to find a number for it from some searching just now, though.

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Clicked on the first thing that popped up about ACR track records.
ACR Record

Laguna Seca; Salinas, Calif.
1:28.65

Road Atlanta; Braselton, Ga.
1:26.54

Waterford Hills; Waterford, Mich.
1:10.89

Nelson Ledges; Garrettsville, Ohio
1:06.21

Motown Mile; Detroit, Mich.
51:17

GingerMan Raceway; South Haven, Mich. / Extended Length
1:31.91

Pittsburgh International Race Complex; New Alexandria, Pa. / North Track
58.37

Grattan Raceway; Belding, Mich.
1:22.09

Virginia International Raceway; Alton, Va. / Grand Course
2:40.02

Willow Springs Raceway; Rosamond, Calif. / Big Willow
1:21.24

MotorSport Ranch; Cresson, Texas
1:16.98

Buttonwillow Raceway Park; Buttonwillow, Calif.
1:47.70

Inde Motorsports Ranch; Wilcox, Ariz. / Configuration 4
1:33.75

the ACR Would have taken the ring back but dodge wouldnt fund it so they raised some cash and went for a weekend and they ran a 7:01, if they had the funding and stayed for longer they would have easily taken the record back.

I never said that weight and downforce are the same thing, you have to seriously stupid to make that assumption about what i said. How old are you? seriously, because your acting like a child.

That radical SR8 that your bragging about is not street legal or a production car either, but please keep posting your smart comments so i can laugh at them

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And?? What are the comparison lap times of other cars??

Yes you did. You talked about your car having 1200 lbs of downforce on the front axle.

It may not be street legal in the US, but it is street legal in Europe. The reason it’s not street legal in the US is because they couldn’t be bothered.

Anyway, as mentioned there are other real life examples with the Aventador LP770-4 (mid-engine layout) or the 911 GT2 RS (rear engine layout).

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The SR8 is not street legal in Germany, which is where Nurburgring Nordschleife is in case you didnt know. The Radical SR8 is a race car so stop comparing it to road cars.

All the track times i posted are where the ACR has the fastest time, USE GOOGLE.

Explain to me how saying 1200 lbs of dowforce over the front axle (which i never said) means, in your head, that weight and downforce equals the same thing.

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