Z06 RM Tuning Help

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4rephotographer

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tifosi1991
Hi All,
I'm not great at tuning, and I need some help with my Z06 RM for the world championship. It's got a lot of understeer and is very stiff (I realize it's a race car) so tracks like the 'ring are quite difficult. Is there anything I can do to soften it up a bit, without losing the power or causing oversteer.
 
Lower rear downforce by at least 10-15 clicks. Front down force max.

Front camber 2.4 rear camber 0.7

Front toe +0.25 Rear toe -0.25

Move the weight to the rear even if you didn't add any.

Make your dampers a few clicks softer on the right side, same with ride height and spring rates.

LSD

8
13
5

The vette's suck in this game unfortunately PD didn't want to implement its real life dominance, You can't get rid of the under steer completely.
 
MrPainCake
also if his using ds3 or wheel, because theres a big difference between them
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Seriously, dude..?? Look at the date of the OP, you think he's even listening..??

{Cy}

PS - This has to be one of the deepest digs I've seen, Tony Robinson would be impressed...
 
Adrenaline
Good thing you guys got back to him so quickly...
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I didn't even look. Just tried to reply before someone gave him the typical "try the search function"

I just noticed there was only 1 reply and thought it was new, oops.

There is a Corvette RM tune that will eliminate SOME of the understeer, to whoever is interested.
 
Your toe settings would increase understeer compared to the opposite, a lot.
 
rosckolove
Your toe settings would increase understeer compared to the opposite, a lot.
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I might be more inclined to consider your feedback had you actually driven either of my Vettes at Monza, then tested your changes, then post the results of your improvements. Until then, I am searching for the ignore button.
 
The main reason the corvette isn't competitive in PP racing is because of its understeer. I used to run similar settings. Opposite toe settings helped a lot with the understeer (positive front negative rear)

I'm sorry I didn't test it at a track with 6 corners, I chose the Ring. Perhaps the car is very stable and easy to drive. But those toe settings IMO would promote understeer. The initial turn in on the car is great. Its mid corner rotation that the vette sucks at, and opposite toe settings would help with that.

IMO.

I only saw one of your tunes. Perhaps the other one is different, in which case I will eat my words, and apologize for my stupidity.
 
Motor City Hami
So toe settings are backward now too? How did I miss that?
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Compared to how they always were in GT5?

+front -rear helps a car rotate in this game. The OP asked....... (let me check again to make sure) Yes, he asked how to help with the understeer.

Is the Vette backwards?
 
xande1959
first you have to report how many (HP HOW MANY KG) which circuit etc.
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I bet you're going to be waiting around another two years for this guy to answer you.:lol: I'll check back in a few years to see what he has to say. :odd:
 
+front and -rear toe does help reduce understeer and increase mid corner rotation, I usually run +10 to +15 front and -5 to -10 rear on FR cars, depend on how understeer the car is. My Hosaka Tuning R33 GTR linked on my sig have pretty extreme toe +35 front and -35 rear, but it does handle great, oversteer on 4WD ftw
 
Wow yesterday i saw someone preaching how negative front toe coupled with positive rear toe made cars rotate more. Today i am reading the total opposite. Wtf?

From doing my own testing i have found that if rear toe is at 0, positive front toe leads to better turn in but more understeer mid corner, and negative front toe yields better mid corner grip and slower turn in. Is this wrong?

I will try the negative rear and positive front combo though.
 
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kleefton
Wow yesterday i saw someone preaching how negative front toe coupled with positive rear toe made cars rotate more. Today i am reading the total opposite. Wtf?
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Don't listen to anything in this thread. Many thoeries posted without anyone showing thier work with a real test and measureable results. Do your own testing on the subject.
 
Motor City Hami
Don't listen to anything in this thread. Many thoeries posted without anyone showing thier work with a real test and measureable results. Do your own testing on the subject.
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Thx. But i have never thought about running such a crazy combo. I'm intrigued so i will definitely test that theory.
 
Why would you not listen. It absolutely creates oversteer. I don't need to do a way to long super controlled test to say that +front -rear helps the car rotate. Thats what it does, its very noticeable. Go try it.

Go and run -0.15 +0.15

then run +0.15 -0.15

Tell me which one has more mid corner rotation.
 
^ or try my Hosaka Tuning R33 GTR tune on my sig, and be ready for some oversteer action on 4WD, tune was made for Eiger on sports soft tires, but can be used on other tracks too.
 
kleefton
From doing my own testing i have found that if rear toe is at 0, positive front toe leads to better turn in but more understeer mid corner, and negative front toe yields better mid corner grip and slower turn in. Is this wrong?
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Not if you've tested and that's your findings. There's plenty of tuners take differing approaches and get good results.

Prior to 2.08, it was very common to see negative rear toe used on AWD and FWD and positive rear toe to help grip on corner exit on slippy RWD.

But since the last update it's proving difficult to rid formerly neutral cars of under steer and the use of positive front toe is becoming more common. It could make some cars a little unstable at one time but not so much now.
 
Negative rear toe makes more sense though. If u visualize what the outside rear tire is doing while the car is cornering you'd think its better if it was angled outward to help the rear end move out. So if that rear outside tire is angled inward then the rear end should be more reluctant to rotate. The rear inside tire toe does very little since theres almost no weight on that end while cornering.
But i know... i know...this is not real life...
 
I've always thought of +ve front toe as an illusion... gives the impression it's reducing understeer as it makes the steering feel more 'alive', but ultimately it reduces mid corner grip and leads to slower lap times.

I used -ve rear toe on virtually everything... has much more of an influence over handling balance than front toe.
 
Try to visualize front positive toe ( tire point inward ) and imagine the tire pointed in certain direction, say turning right at an angle, the outside front wheel with more load have more angle into the turn - better turn in response and the rear outside wheel with negative toe points outward which helped the rear rotate more.

Mid corner there will be more rotation, but it will gradually pushed outward when exiting as the steering angle is reduced, with FR cars, understeer on exit won't be much an issue, this however might not be favorable with FF cars with big power, it's more driver dependent, some do not like it. For FR cars, I never run more than +20 on the front, sometimes +10 is more than enough, +15 works on certain cars.

Sometimes I run FR with both positive front and rear, as some FR have natural oversteer tendency, +10F and +20R, this often works with cars like Triumph Spitfire or Ginetta G4.
 
I don't need a lesson in toe, I understand how it works :)

As I said, IMO, +ve front toe does nothing but make you think the car is understeering less because the steering feels more responsive (which is at odds with real life, where it makes the car more stable). In reality it kills mid corner and exit speed by adding understeer.

And in any case, it's not the outside tyre you need to be concerned about... it's the tyre under most load so you'll naturally apply enough steering lock to get this tyre to the right angle (but not to the extent you have the front sliding)... the inside tyre is the one that then carries extra angle and helps 'pull' the front round the corner.

I've got a few of the 'Super Aliens' on my friends list and get to see the tunes they use on the seasonal TT's when they have cars on share... and I have never seen any tunes from any of these people running +ve front toe.
 
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Stotty
I don't need a lesson in toe, I understand how it works :)

As I said, IMO, +ve front toe does nothing but make you think the car is understeering less because the steering feels more responsive. In reality it kills mid corner and exit speed by adding understeer.

I've got a few of the 'Super Aliens' on my friends list and get to see the tunes they use on the seasonal TT's when they have cars on share... and I have never seen any tunes from any of these people running +ve front toe.
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Now thats the way to back up your opinion haha. Are you saying you run 0.00 in the front, or negative front toe? After your edit I assume you run a a low value of negative toe up front compared to the rear?
 
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rosckolove
Now thats the way to back up your opinion haha. Are you saying you run 0.00 in the front, or negative front toe?
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100% of the time -ve front and 99.9% of the time -ve rear. Only time I'd ever use +ve front toe is on high powered RWD cars on tyres that are borderline for grip. The SLS current seasonal is one example... 721bhp, no aero, sports hards... on this one I use +0.05 to help make the oversteer a bit less of a pain on exits... it doesn't stop the oversteer, just helps reduce how sideways the car gets.

IME, front toe has much less of an influence over balance compared to rear toe.

rosckolove
I assume you run a a low value of negative toe up front compared to the rear?
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Not necessarily... some cars I'll run more front than rear... depends. But rarely either will be above -0.20.
 

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