teamking

Yes, those are the UK spec alignment numbers. (and notice that 6* 45" mean 6.75*, not 6.45*, where * is degrees).

But, since you don't have spec tires and rims and you say you've got oversteer...............

Orthonormal

Sure, that's the min/max recommended settings. That is not the min/max achievable settings.

Have you tried more gradual application of the throttle?

This is probably something that you will have to figure out for yourself. Not everyone has a similar driving style to yours, and posting a message in words on the internet isn't going to tell you who does. It's up to you whether you want to go the route of buying the Mugen bar to see if it's what you need, or going straight to the Comptech bar which is adjustable.

To give you more data to decide: I autocross. I run Hoosier A6 competition tires in the same width front and rear (245mm). I have the Gendron/Small Fortune Racing front swaybar set at its stiffest setting. That is similar to the Comptech's stiffest setting, from what I've been able to determine. I use zero toe on the rear tires to help balance the mid-corner understeer created by the stiff swaybar. My camber is -1.6 front, -1.8 rear. I have a MY05 car.

My street tires are 225 and 255, and the car feels well balanced. I certainly do not get power-on oversteer unless I am really rough with the clutch and steering (ie, it's intentional).

S2K_San

How much body roll do you have with the stiffer front sway bar?
I think i have too much.



Stiffer sway bar make less body roll or if i want less body roll i need stiffer and lower suspension?

teamking

At least your inside rear tire is on the track... that's good!

Two other questions:

What tire pressures?

When was the last alignment done, and what were the exact numbers?

negcamber

True...but his inside front is a lot higher than it probably should be.

San...have you checked to make sure your front swaybar endlinks are OK...you may have a broken endlink or possibly the swaybar mount has a problem.

Also...looks like you have an in-car camera...can you post the video?

S2K_San

Here is one in-car video: click

I have 100% stock car. I think this body roll is normally with stock sway bars, Advan A048 has bigger grip than street tires.

I can go faster if i can reduce this body roll. Stiffer front sway bar resolve this problem?

BryanH

Where's your helmet?

A stiffer front bar will indeed reduce body roll and oversteer. It's not the most ideal solution but it's the easiest.

teamking

Based on your picture, I picked a couple of points near the headlights, and estimate you're car is rolling about 5.0*. I did the same thing on mine, and got about 3.6*. So, yeah, maybe a stiffer FSB will help you out.

Nevertheless, I'd pursue your oversteer correcting options in the following order (I'm largely restating what myself and others have already said):

1. Buy chalk and a tire pump that runs off the cigarette lighter for $30. Mark the sidewalls of your tires with the chalk to make sure you've got the right pressure.

2. Check your alignment. Unless you've checked it recently, there is no reason to think that it is on spec. If it is not, set it to UK spec. If it was on spec, increase the rear negative camber. $70.

3. Spend more time in the car with a good instructor, and let him drive and see what he says. Perhaps you need to be smoother on the throttle. $250.

4. Buy an adjustable front sway bar. $700.

Oh, and don't forget the helmet.

taz5

Any recomendations on a set of adjustable sway bars?
(Thinking of getting the Cuscos, are they much stiffer than stock?) Has anyone tried them?