moda50

Again thanks for the replies...I have stock rims and tires on this S2000..I am looking into all the suggestions here good stuff.

Fokker

'04 and onward has the same stabilizer bar in the rear (outside the CR). I would suggest only changing one at a time instead of potentially swinging things too far in the opposite direction. If after the stiffer front you want to soften the rear more on the cheap, you can go with an NC Miata front bar for the rear.

If you want to soften the rear with the ability to dial in the stiffness to your liking, the Karcepts rear bar can go almost as stiff as the AP2 OEM rear and softer than the NC Miata bar.

THMotorsports

The 00-01 bar is the biggest OEM bar offered. An Eibach bar offers even more bar than that.

Before you get into buying a bunch of new parts though, have you checked your alignment?

Car Analogy

+1 on alignment first.

Next, make sure the po didn't accidentally put springs in the wrong end, fronts in the rear, rears in the front. That would totally mess up the balance.

See if you can read the Tien part numbers off the sides of the springs. Then google to see which end should be which.

Also heard of someone that got a car with aftermarket springs installed wrong left vs right! One side was correct, other side had front and rear swapped. Yeah, weird handling for sure. So check all 4.