Suspension changers for heavier wheels. (beating issue again)

[dennis]

Wanted to know after the fact, my Speedline mistal 16/17" wheels/yoko tire combo weigh out +8fr/rear +10lbs over stock.
Besides changing wheels (just spent$$ on my S4Avant,and had the Speedlines resurfaced)
what else can I do withthe suspension to offset the "heavier feeling"? I know the yokos get harder with age and will replace them too, but what else? Is it only to replace the wheels?
Dennis

 

[mandrewz]

Speaking of heavy wheels, have you weighed
the S4A's wheels-54pounds with tires. I put
BBS(still heavy)/P-O rossos and they changed
the whole personality of the car. What mods
have you done on the S4A? I am tempted to
chip, but am affraid it will distroy the
already dismal MPG.