Grooved Pavement...

hey guys,
i don't know what it is, i have replaced all my bushings with energy parts, got the Pro-S coilovers (basically) from Skunk2, have a stock front sway bar along with the top strut bars front back. yet, grooved pavement on the freeway at speeds >45mph will throw me around and make the ass feel like its swinging around....
just wondering if any of y'all have this problem as well? its probably lowered about 2" with 205/40Z 17's tyres. the only other thing i can do really is add a rear sway bar but that SHOULDN'T be necessary right?
anyway, any thoughts welcome...thanks!
James
i don't know what it is, i have replaced all my bushings with energy parts, got the Pro-S coilovers (basically) from Skunk2, have a stock front sway bar along with the top strut bars front back. yet, grooved pavement on the freeway at speeds >45mph will throw me around and make the ass feel like its swinging around....
just wondering if any of y'all have this problem as well? its probably lowered about 2" with 205/40Z 17's tyres. the only other thing i can do really is add a rear sway bar but that SHOULDN'T be necessary right?
anyway, any thoughts welcome...thanks!
James