Quote:
Originally Posted by mlai
I know I mentioned differential/rear suspension initially, but please do read my follow on comments. The car is equipped with IAS (4 wheel steering) and I subsequently think the the extra torque is overpowering that system which controls the turning of the rear wheels +/- 3 degrees. If that system is overpowered and allowed the rear wheels to move, that will cause the rear-end wobbling that my friend and I feel.
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Perhaps you are correct. But keep in mind, the rear IAS system is built to handle the lateral load of a 4500lb car cornering at nearly 1g, while under power, without being "overpowered". I would certianly hope it could stand up to a few extra lb-ft of twist in a straight line, without exibiting would could only be classified as torque-steer.