How to get rid of understeer?

  • Thread starter Thomasss95
  • 33 comments
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Thomasss95

Thomasss95

632
Netherlands
The Netherlands
Hey,

I drive the Spoon Integra (and sometimes Civic) now and they are pretty fast for a 450PP car.
Especially the Integra is very fast.
The problem I have is that they both understeer A LOT...
Do you guys have a nice tune that is fast and gets rid of the understeer?

I would really appreciate some help! :)👍

Thomas
 
Hi :dopey:

I'm not at home, so I don't have the exact numbers but start here and adjust where needed :D

FRONT/BACK
Ride hight- 0/-15
Spring rate- sixth big line on the slider/first (or lower) line on slider
Extention- 10/4
Compression - 4/10
ARB - 1/7
Camber - 2.0/0.0
Toe - -0.22/-0.05

Hope it helps :dopey:
 
krenkme
Hi :dopey:

I'm not at home, so I don't have the exact numbers but start here and adjust where needed :D

FRONT/BACK
Ride hight- 0/-15
Spring rate- sixth big line on the slider/first (or lower) line on slider
Extention- 10/4
Compression - 4/10
ARB - 1/7
Camber - 2.0/0.0
Toe - -0.22/-0.05

Hope it helps :dopey:
Click to expand...

Thanks! :)
I see that you try to get oversteer.
But why do you make the back lower than the front?
An why do you set the compression higher on the rear?

Sorry for the questions, but I am not a very good tuner...
 
Lowering the rear in relation to the front can induce oversteer when combined with other adjustments. I suggest you watch this from start to finish but remember that the examples are extreme and are only to give you an idea of how suspension tuning influences the way a car performs. Video is courtesy of oink83.

 
Thomasss95
Thanks! :)
I see that you try to get oversteer.
But why do you make the back lower than the front?
An why do you set the compression higher on the rear?

Sorry for the questions, but I am not a very good tuner...
Click to expand...

The rear of a front wheel drive you want to make "dead". Limiting the weight transfer to the rear helps keep the weight on the drive wheels and thus help with the turning.... does that make sense? I'm not good at explaining stuff :dopey:
 
krenkme
The rear of a front wheel drive you want to make "dead". Limiting the weight transfer to the rear helps keep the weight on the drive wheels and thus help with the turning.... does that make sense? I'm not good at explaining stuff :dopey:
Click to expand...

So if I add ballast, I should add it to the front of the car and NOT the rear?
 
Thomasss95
So if I add ballast, I should add it to the front of the car and NOT the rear?
Click to expand...

Rear. It's all about the weight transfer. If it's on the rear, in a strait line it handles better, and with damper settings it will transfer the weight during cornering (where its needed) :dopey:
 
FWD cars understeer the way they do because of all the weight over the front wheels. Oversimplified, yes, but it's a key cause of the problem. You also have to consider the fact that those front wheels (often narrow and short on front-drivers due to their typically compact nature) do more work than those on RWD cars; they steer, accelerate, and brake.
 
Take more off your front. I cant tune FF's to be honest but I do know a few universal tricks. Put more slippery tires on rear, make the front brakes not lock, Soften the front.
 
fbccars924
Take more off your front. I cant tune FF's to be honest but I do know a few universal tricks. Put more slippery tires on rear, make the front brakes not lock, Soften the front.
Click to expand...

Would it he smart to use normal or hard tires on the rear when I use Racing Soft on the front?
 
I wouldn't make the difference larger than one class unless your one of those Tail drag "drifters" if you running sport softs put sport mediums rear. or if your running racing hards put sports softs on the rear. Mind you this is a quick and usually pretty frowned upon way to tune but if its for seasonals or in game races there's no issue in doing it the cheap and easy way.
 
fbccars924
I wouldn't make the difference larger than one class unless your one of those Tail drag "drifters" if you running sport softs put sport mediums rear. or if your running racing hards put sports softs on the rear. Mind you this is a quick and usually pretty frowned upon way to tune but if its for seasonals or in game races there's no issue in doing it the cheap and easy way.
Click to expand...

It's not a fix as such, if you've got understeer, doing the above will merely induce oversteer (if that), the understeer will still be there.

Generally what I do is stiffen front and soften rear springs, some negative rear toe and some front camber. I used to lower rear ride height too, but that doesn't seem to work anymore... Oh and also soft front ARB, stiff rear.
 
trackripper123
It's not a fix as such, if you've got understeer, doing the above will merely induce oversteer (if that), the understeer will still be there.

Generally what I do is stiffen front and soften rear springs, some negative rear toe and some front camber. I used to lower rear ride height too, but that doesn't seem to work anymore... Oh and also soft front ARB, stiff rear.
Click to expand...

Most people say I should stiffen the rear to reduce understeer...
 
Thomasss95
Most people say I should stiffen the rear to reduce understeer...
Click to expand...

Well there's been a whole debate over how PD possibly could have programmed in the spring rates backwards, that's how it is in real life, but I don't think I've felt it that way in the game.

Don't quote me on that though, I'm not sure where I stand on that anymore.
 
bs13
Motor City Hami has "Quick Tunes" for each drive train type at the bottom of the first post here. https://www.gtplanet.net/forum/showthread.php?t=167421

His 2nd post includes a tuning guide that may also help.
Click to expand...

You're right, this is the best tuning guide i know and yes, springs are backwards in GT5 and also ride height don't have anymore influence on the oversteer understeer balance since 2.07 or 2.08 if i remember. But you still have to set your springs harder or softer acording to this ride height .

><(((((°>°°°°°
 
The Integra drives very well and balanced now.
Thanks again for the help! :)
I just wanted to let you know that it helped a lot!
 
MadCyclist
Lowering the rear in relation to the front can induce oversteer when combined with other adjustments. I suggest you watch this from start to finish but remember that the examples are extreme and are only to give you an idea of how suspension tuning influences the way a car performs. Video is courtesy of oink83.
Click to expand...

I stopped watching the video at the 1:30 mark when I heard a discussion about oversteer and understeer and saw no LSD equipped on the car.
 
Motor City Hami
I stopped watching the video at the 1:30 mark when I heard a discussion about oversteer and understeer and saw no LSD equipped on the car.
Click to expand...

Now you are talking about LSD, I am thinking about mine...
I use 7/12/5 for my Spoon Integra.
Is that good if I use Racing Softs?
 
Thomasss95
Now you are talking about LSD, I am thinking about mine...
I use 7/12/5 for my Spoon Integra.
Is that good if I use Racing Softs?
Click to expand...

That is a good starting point, but each car can need something different. Put Comfort Softs or Sport Hards on it and tell me if you get inside or outside wheel spin when you hit the gas coming out of a tight, 2nd gear corner.
 
Motor City Hami
That is a good starting point, but each car can need something different. Put Comfort Softs or Sport Hards on it and tell me if you get inside or outside wheel spin when you hit the gas coming out of a tight, 2nd gear corner.
Click to expand...

In a few corners on the Nordschleife the inside wheel spins a bit on Racing Softs.
 
Thomasss95
Hey,

I drive the Spoon Integra (and sometimes Civic) now and they are pretty fast for a 450PP car.
Especially the Integra is very fast.
The problem I have is that they both understeer A LOT...
Do you guys have a nice tune that is fast and gets rid of the understeer?

I would really appreciate some help! :)👍

Thomas
Click to expand...

Hi sir I have a tune for that car i will look for it today and update you here or in my garage by the tune .
I think mine running both sports soft and racing soft tires NURB RING TUNE .

ND:dopey:
 
Thomasss95
Now you are talking about LSD, I am thinking about mine...
I use 7/12/5 for my Spoon Integra.
Is that good if I use Racing Softs?
Click to expand...

Thomasss95
In a few corners on the Nordschleife the inside wheel spins a bit on Racing Softs.
Click to expand...

Try using lower grade tyres, as Hami suggested. If you intend on using the car on RS tyres, then I'd recommend tuning it on SS tyres, at the very least.

7/12/5 is ok, but you'd be surprised at how high you can run an LSD in a FWD car, particularly the ACCEL value. It is critical that you're properly managing the front of the car though, you need to make sure those front wheels are planted, constantly. Stiff front springs, medium strength compression, strong extension, a healthy amount of front camber and an equal amount of negative toe. This way, I can easily see diff settings being in the ranges of (9-12)/(26-32)/(8-12). On RS tyres, that'll pull like an express train on corner exit.

Have a look at my Focus ST170, it ain't the fastest car out and is built to run on CS tyres, but it doesn't understeer like a FWD and is great on corner exit 👍

For more examples of using high diff numbers on FWD cars, be sure to have a look at some of the offerings from the guys at RKM, they've been doing it for years now...

{Cy}
 
Thomasss95
Hey,

I drive the Spoon Integra (and sometimes Civic) now and they are pretty fast for a 450PP car.
Especially the Integra is very fast.
The problem I have is that they both understeer A LOT...
Do you guys have a nice tune that is fast and gets rid of the understeer?

I would really appreciate some help! :)👍

Thomas
Click to expand...

Here it is Sir just give a try and tell me how she drove in your hand .
I'm using wheel G27 all aids off , ABS 1 , transmission manual ,
Grip real , tire wear normal . That's for online races mode enjoy .

Link to the tune https://www.gtplanet.net/forum/showthread.php?p=8581292#post8581292

ND:dopey:
 
Thanks again for all the help! :)

ND, I will try your tune.
But it can take a few days, I have little time for a few days...
 

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