I have a MY99 STI V6. I'm running AST Sportline coilovers with 4kg/mm springs all round, Whiteline 22mm ARBs front and rear with solid droplinks, Whiteline ALK. I run 2 degrees negative camber at the front, 1.5 rear, 5 minutes toe in all round and as much castor as I can get at the front. I am currently running Toyo R888 tyres, 225/40/18.

I've still got too much roll, especially at the front and I end up driving on the outside tye sidewall.

I was wondering if anyone out there regularly tracks or races a classic Impreza and what they have done ARB-wise and what geometry they use.

Any advice/help will be much appreciated.

 

22mm front and 25mm rear, std springs and suspension. 205/40/17 888's

I have very little scrub on the front corner and im running loads less negative camber than you too.

Perhaps its more a driving style thing?

 

Bigger rear bar first, then springs maybe ?

dunx

 

More rear roll stiffness might be required. On most Imprezas a 24mm rear bar works well with a 22mm front, depending on driving style.

But first you need to determine what the balance of the car is in fast corners. If the car is ok in fast corners, you might be going too fast into the slow corners, causing understeer.
Turning in too early and steering too fast has a similar effect.
The 888 like a reasonable smooth driving style. So if you slow your steering down and give the tyres time to change direction by turning in later and turning in gentler as well as hitting the apex later, you might well lose the understeer.