Is that fixed with front camber settings? Or maybe stiffer rear sway/strut tower bars?? Or something else?

 

Spring/damper settings are your best bet to tune the amunt of under/oversteer you want... but remember it is all about balance, so adjustments in one area may require similar adjustements elsewhere to maintain the balance and harmony of the car...

 

If you have a relatively stock suspension set-up, then tire pressures are all you need to play with. If you want to play with springs or sway bars then just remember that the stiffer you go on either end, the faster your weight transfer will be thus affecting under/over steer. Stiffer up front will result in understeer, in back - oversteer.

 

The cheapest and easiest way is to adjust the toe.

 

how do you do that?

any pics? instructions?

 

Toe needs to be adjusted at an alignment shop. It can be done without the shop, but you wont know what your are setting your toe to without being on the alignment rack.

Im guessing that pointing the front wheels IN would give you more oversteer and less understeer?

 

Wouldn't the simplest way to stiffen the front or rear is with strut braces [both upper and lower]... You may find that you need more adjustment than they offer and then [and only then] would I proceed with suspension modifications.

 

Easiest way to correct under/oversteer is to adjust the driver/technique.

 

Yep, learn to drive. No, I'm not being an a-hole.

Jason-
who's got a LOT to learn...

 

P.S. Tire pressures are almost as important as the driver/technique.

 

ok, driver/technique aside...

Im talking about mechanically. Ive always heard that if you tighten up the rear with some strut bars and sway bars, that would make the front more responsive and give less understeer. I was also really curious about the camber but I guess that camber doesnt matter too much in relation to over/understeer.

 

Strut bars will help prevent the chassis from flexing - this is different then helping to reduce understeer...

And as for using tire pressures to induce/reduce oversteer - I prefer to use suspension setups (that is what they are for) and leave the tires for what they were intedned, which is providing a contact patch to the road...

 

He did not ask how to make his car handle better and get more overall grip, he just asked how to correct under/oversteer. Tire pressure is a key component in determining suspension feel. By biasing the tire pressures between front and rear (no more than a few psi), you can greatly affect the way the car responds to driver input. I think it is a little silly to say tires are only to provide a contact patch...they can be very useful in tailoring the car's behavior on track (and autox too).

 

I totally agree with you, what I am saying is that tires is not where i would start. Personally, I prefer only making minor adjustments with th tire pressures rather then relying on tire pressure alone to effect handling charecteristics...

 

26mm Mugen rear sway bar.

 

Does anyone make a front sway bar for the R? Can you even add one?

 

Best way to oversteer?
Lift the throttle.
Best way to understeer?
Turn the steering wheel a lot.

 

Yes...Mugen makes one that is 26mm (huge). The car would be very hard to oversteer with an increased diameter front sway bar

 

Isn't oversteer something you'd want to avoid? Although I suppose that would increase under-steer?

 

You want to avoid excessive oversteer...but slight oversteer in a FF car like the ITR can actually be beneficial to lap times if handled properly. The car does oversteer a bit with the stock suspension, but as you gain more driving experience and become more comfortable with the car, you will crave more rotation... That's when aftermarket suspension and bigger rear sway bars come into play.

 

I added a Spoon rear strut bar and now my car oversteers a little too much for my liking. It feels really twitchy and unstable going thru any transitions like slolams.
On the other hand, I have no problem tossing the car around tight or hairpin corners. It feels almost like a rwd vehicle.

I'm still debating whether adding the rear bar was worth it. I'm putting R compounds on the car which may help me feel more comfortable. Also, changing my driving style a little may actually allow me to take advantage of the over rotation. I'll play around and find out what works best for me in the 4 remaining autocross events that will take place before winter comes

 

to have more oversteer you would get a rear sway bar only, if you get both you will have that neutral feel that some like and dislike(i prefer more oversteer).

 

I can't believe you are getting too much oversteer with just a rear strut tower bar...it doesn't really do all that much (at least not compared to a sway bar). Are you sure it wasn't the tire pressures that made the car feel twitchy?

Don't take this the wrong way, but you probably aren't ready for R-compounds yet. They might make you feel more comfortable, but they will mask a lot of minor driving errors that could turn into major errors during a high speed event. Stick with stock suspension and street tires until you can drive your car like those guys in the Best Motoring videos...

 

Anoher question, a little OT perhaps, but I run 35 psi in the front and 33 in the rear. I feel this is a good setup. But I'm wondering what everyone else runs? If my brain works, equal contact patches all around would be beneficial, and because the front is heavier, the same psi would result in a larger patch in the front, so I run less in the rel to make the contact patch closer all around. Does this make sense? TIA

 

35/33 is fine...but it all depends on what type of driving and the driver. For street driving 35/33 is good because it is a neutral setup. Not sure if this helps you at all, but with stock suspension and street tires, I usually run the following pressures and adjust as necessary:
Street = 34/34
Autox = 40/42
Track = 30/32