The two posts above nailed it with all the gritty details. To grossly over simplify it, in a racing situation, you're usually better off increasing grip to solve a handling problem than you are decreasing grip.
So, many of the suggestions above deal with increasing grip on the front end to make the rear feel looser in comparison. I'd start with the suggestions for adding traction in the front before you jump in and take any away in the rear, as that just might be enough.
When I was auto-xing, I seem to remember many guys thought running a 24mm rear bar (GC8 impreza) was a badge of honor or something. The ended up making the rear so twitchy that they lost time even though it cured the understeer problem.
Dave |