The market is BEGGING....

[D_Eclipse9916]

To make it (the BRZ) understeer MORE than the FR-S.

Satisfied?

If you take two identical cars, give one stiff springs in the front and softer springs in the rear it's going to understeer more than the other one, all other things being equal (which isn't guaranteed...I don't have the rollbar thicknesses at hand)

FWIW, this, the interior, and money are likely all Toyota really contributed to the BRZ/86.

in the world of trying to get fwd commuter shitpiles to corner, the rule of thumb- stiffer in the rear = more oversteer generally holds.
for a balanced rwd sports car, its not nearly as straightforward and a lot of things contribute and the reverse can sometimes be true.

just look at the SM suspension 700lb front, 325 lb rear, 27mm front, 15mm rear
that shit does NOT understeer

Its also a double wish-bone suspension. Hard to compare spring rates at an oem location due to differing geometries (as you said).
It also depends on what you are starting with. If you have a 750F/800R spring rate like in my bmw and up the front sway bar, you induce less front grip. IF you had a stock m3, upping the front sway bar INCREASES front grip due to increase of roll stiffness (which you dont need with 750f/800r).

Generally for spring rates in the 150/200lb range on OEM vehicles, any increase helps grip. Struts dont like roll, they do weird things under compression.

Shit: did I agree with grouchy Evan? :lol: