Most people bolt on coilovers and wonder why their Z suddenly feels like it's trying to swap ends mid-corner. Here's what's actually happening underneath you. 1. Your 350Z runs a multi-link rear with five separate arms — upper, lower, compression, tension, and toe. Each one controls a different axis of movement, and none of them are redundant. Lose geometry on one and the whole system compensates badly. 2. The BRZ uses a simpler double-wishbone setup that's more forgiving at stock ride height. The Z's multi-link is technically superior but way more sensitive to changes — which is why it rewards proper setup and punishes lazy ones. 3. That loose, sketchy rear feel most Z owners complain about usually comes down to the rear toe link. Under load, the stock stamped steel arms flex just enough to let the rear wheels toe out mid-corner. That's instant oversteer you didn't ask for. 4. Drop the car 2+ inches on coilovers without addressing the arms and you've now changed the working angle ...