I just ordered a Perrin adjustable rear sway bar. I was wondering which setting is the firmest. Which adjustment hole will give me the most oversteer and which will produce the least?

 

The rear sway bar should have three settings. The adjustment hole nearest the end is the softest and the adjustment hole closest to the bend is the one for the stiffest. Have fun.

-Soren

 

That is not what I am intending to do. I am going to start at the middle setting and choose which way to go from there.

 

i have a whiteline set at 22 mm. 2 mm more than what stock would be (sedan). some people say 24 might be too much, however try it if you like and let us know.

 

Just installed the Perrin RSB on the softest setting. It stiffens the car a little going through the twisties. A little twitch of the wheel mid-turn and it puts me into a nice controlled 4 wheel slide. The car feels more 'buttoned down' on highway onramps, much less vague and with much less body roll. An outstanding improvement.

I figure that if I adjust the bar to the stiffer settings, the handling will become more oversteer prone. The softest setting (Which is still way stiffer than stock) made my car feel much more neutral. Not much understeer, and not much oversteer which was exactly what I wanted from the bar in the first place.

 

I have the Perrin RSB and endlinks. With the bar on the softest setting with the stock tires there was no more understeer, pretty much completely neutral. I then upgraded rims and tires and moved the bar to the middle setting and the car is still neutral with no understeer. I think I am going to try the stiffest setting in an attempt to get the car to rotate a bit more.

Dinoguan:

Think about how the bar is working when in a hard turn. The outside wheel is being pushed up into the wheel well and the end of the sway bar is going with it: up. At the same time the inside wheel wants to go the opposite direction: down. The sway bar is there to keep the wheel travel more even between the two. With the bar on the softest settings on both sides when you take a hard corner the above descriped is going on and the bar is doing its job. But when you move it to the next setting and take a hard turn in is enacting more force on the inside wheel due to the shorter length. Think about what happens when you take a stick of about 1" diameter and about 3 or 4 feet long. If you hold the stick one end in each hand and position your hands as close to the ends of the stick as possible and try to bend it you can. Now if you move your hands in 6" from either end and try to bend it again it is more difficult. Move your hands in again and it is even more difficult to bend. This is basically the same thing that is happening with the sway bar.

Sorry for the long post, I hope this helps.