Originally Posted by niznai

Too little front grip. Your car is pushing.

As a first measure I would try to check what the rear end is doing, because if your car is squatting, that unloads the front. This is so you don't give away any of the rear grip. To cure this you might have to add some antisquat before considering the shock/spring combo in the back.

If that doesn't work, it means you have a large imbalance in weight transfer front to rear. You might have equal (static) corner weights but that is obviously not helping you (if it is the case).

That done and squat brought under control, if the problem persists I would look at front droop, and then ackerman, you might need to readjust to suit your track.

I would also make sure I have front camber where I want it and check the front can make use of the tyres when rolling.

There are other measures as well, but those will take away some of the rear grip (stiffening the rear suspension, moving the front arms backwards, etc). You don't want that.