How to eliminate understeer?

[Hallowenman]

I really like GT3 racing, and I drive the McLaren mostly. Whenever I switch to the BMW I feel like it has huge problems with understeer. I am not good at tuning so I'm asking here for tuning help. I have heard that reducing rear grip/downforce (less rear wing value) will help the front end, but compared to the McLaren the BMW also likes to slide a lot more, so I want rear end traction.

Any tuning tips? :)

[sasso]

Publicado originalmente por IMPERIAL:

The McLaren is designed to handle the corners better while the BMW is designed to have more speed. It is possible to make them behave similarly by adjusting the setup, but that is not an easy task.
Things you can do:
- Increase front camber (actually this is moving the slider to the left).
- reduce front suspension stiffness
- reduce front roll-bar
- reduce front dampers
- reduce front tyre pressures
- Increase front height
- Increase suspension travel

You understand by now that a lot of testing is necessary to find the right values for all these variables, and I didn't mentioned them all.
If you do too much the car will not under-steer but it also will not be willing to rotate, making a larger circle when turning.

Edit: reducing transmission dif. coast also helps.

basically this. except it should be decreasing front height so it moves the center of pressure underneath the car forwards . if you want to get better at making your own adjustments, start specifying for yourself when and where on the track you get certain sensations, like entry, mid, exit, slow corners, fast corners, transitions, under braking, under accelaration, neutral. cuz no need to worry about aero in hairpins.

[delirivmcordia]

Publicado originalmente por Maddawg:

Oh yeah, forgot to mention, Deg of Rotation in-game. Set at 220, Yes set at 450 deg. in Profiler. But thats ok, don't listen to me, keep doing what you're doing.

Wwwhy?!
That's not how the system is designed.

[Maddawg]

The system didnt work for me.

[sasso]

Publicado originalmente por eladnosloc:

Wwwhy?!
That's not how the system is designed.

+1 900 deg in Profiler and Game. this isnt gmotor2.

Publicado originalmente por Maddawg:

The system didnt work for me.

fresh, clean driver install? or are you still using a Formula Force GP or just plainly bullshitting?

[Maddawg]

G27. Honestly, dont try my settings. God forbid that you might like them.

[delirivmcordia]

Publicado originalmente por Maddawg:

G27. Honestly, dont try my settings. God forbid that you might like them.

I also have a G27.

Oh, believe me, I wasn't planning to.
Reality is they're fundementally incorrect, so I'm not really interested, to be honest.

[Dr_Jdubz]

Publicado originalmente por yusupov:

just fyi GT3 cars have traction control so you can press ctrl+T to enable it (idk what the default is). unless things have changed, step 1 is the STRONGEST in AC and the higher the step, the WEAKER the TC gets.

Traction control, ABS, DSC, like IRL, is completely ♥♥♥♥♥♥♥ useless unless you have absolutely no experience driving whatsoever. It certainly wont help you compete in AC. Traction control also does little to correct understeer, if anything it can be used to help with OVERSTEER. Otherwise to eliminate understeer add downforce to the front (if possible) and decrease front tire pressure. I dont know about you but I find there is very little understeer if any in the GT cars.

[Game Over, Man]

If you are new to tuning, practice on a car without airfoils. Once you are able to tune a car without airfoils and get faster laps times, then you will know why you need an airfoil.

[Marionette]

http://www.drivingfast.net/car-control/understeer.htm

An entire article on what understeer is, what causes it, and how to deal with it. (It's even got a suspension setup flowchart!)

The whole issue is much more complex then just changing some suspension settings. You have to be consistent first, so you know when the car is misbehaving vs you pushing it to hard.

When you do start messing with your suspension, change one thing at a time, so you know what change did the thing you want. If you change 5 things at a time, you'll never know which one was the right one to change.

[Game Over, Man]

An advantage to stiffer rollbars is more equal weight distribution over the front or rear wheels. On a race course this is good, because they are well banked and level. Bumpy and uneven roads don't play well with racecar-stiff setups, these roads require some suspension compliance and always a safe speed. Body roll causes the car to respond slower with corners, but also makes the tires' job easier as less jerky movement and hence less heat. Another way to add stiffness is with body braces, but for the game I don't think frame torque is modeled.

[Maddawg]

As you can see in this vid, my unorthodox wheel settings are not out of this world. I'm driving the red beemer. Not saying my settings are better than yours. Only that the suggested game settings are not the one and only written in stone parameters.

https://www.youtube.com/watch?v=jJtDoLEGCX8&feature=youtu.be

[Joerg Baermann]

Depends on where your car understeers.
Use the flowchart on this page for adjustment: http://www.drivingfast.net/car-control/understeer.htm

[sasso]

Publicado originalmente por Maddawg:

As you can see in this vid, my unorthodox wheel settings are not out of this world. I'm driving the red beemer. Not saying my settings are better than yours. Only that the suggested game settings are not the one and only written in stone parameters.

https://www.youtube.com/watch?v=jJtDoLEGCX8&feature=youtu.be

Yeah you are doing a great job of not driving racing line and sticking to the inside on corner approach and entry. splendid! These are not "game" parameters made up by Kunos but real ones by..umm.. in your case BMW?!?! On actual topic: quickening the steering doesnt do ♥♥♥♥ against physical, mechanical understeer unless you want to whip the tail loose.

[DombieZale]

Publicado originalmente por Michael:

Publicado originalmente por IMPERIAL:

If you do too much the car will not under-steer but it also will not be willing to rotate, making a larger circle when turning.

That doesn't make logical sense. Understeer *is* the car not turning. If you balance the car the other way it should be more inclined to oversteer.

But most times when people complain about understeer it's because of the way they are driving.

90% of the time they are simply carrying to much speed into the corner. Especially when going from a less realistic racer to a sim. You know, which = any other driving game other than Assetto Corsa TO Assetto Corsa lol.

[ur_grandpa_]

https://www.racedepartment.com/threads/just-had-a-massive-laugh-at-this-topic-ac-understeer.187390/page-22#post-3302197