I thought the moon shaped toe link in the rear suspension is one of the major causes of rear looseness under braking? It is designed to flex so there sre significant changes in rear toe.
At least that's what Dinan sells. I've seen some other tuners advertise the same thing for a similar product.
Quote:
Originally Posted by jml
The first is braking on the low line into T1, which is at the end of a very long highly banked section of the Nascar oval as you transition into the interior road course. You are turning a slight amount and track is bumpy, 140-150mph.
The second is in the opposite direction, braking for T15 at the end of a long straight on the nascar oval. The oval isn't actually straight, so the tires are spinning at different speeds. You brake from 160 to 100.
The feeling is the car wiggling side to side, like it's starting a very light tank slapper. A couple times it has scared me. I could get away with this in the E46 for some reason, but my cure for the issue is to make sure *heavy* braking is done when the car is settled (minimal acceleration on any axis (except the positive Z-axis - compression).
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I usually stay along the outside lane to lengthen the braking zones. I remember going CW was much rougher.
On the otherhand, going CCW is much scarier. I always have thoughts of that ditch.