Do you think your car is oversteering now? My MY00 definitely oversteered in stock trim, however my MY04 understeered. The MY02's were somewhere in between handling-wise as I understand it.
It is WAY more important to understand exactly what your car is actually doing and how to drive it well than it is to start throwing money at things which might not actually be problems. The engineers who designed this car designed it for BALANCE and in OEM trim it is a pretty balanced car. I'd spend my money on quality instruction before I started throwing it at handling 'problems' which may not even exist.

Cheers,
Mike

 

Bigger front sway bar, wider rear tires, countersteering and throttle

 

99% of the time its driver error... practice, practice, practice... over steer is actually a good thing if you know how to control it.

 

My00 had a fairly large propensity to oversteer. I installed a Whiteline 31mm front sway bar (cost me less than $200) and the car is far more neutral for my style of driving.

 

What causes over steer in the s2000 you ask? The answer is crappy drivers who dont know what they are doing....

this is kind of irrevalant to the main topic but its a nice quote from xviper "the weakest link in the s2k drivetrain is not the diff, it's the driver"

 

235 on the rear wll make you spin in every corner

 

This is the C&D view on the topic;

"...certain owners had discovered inappropriate vehicle rotation at the point of disappearing talent..."
Barry Winfield C&D Magazine

 

OVERSTEER is caused when your rear tires have LESS traction then the front tires.

This is dangerous on a REAR wheel drive car as it will cause the ass to slide out on you if you brake (shift weight to the front causing even less weight on the rear tires, or throttle causing the wheels to spin loose due to lack of traction already).

UNDERSTEER on a rear wheel drive car means that the rear wheels are essentially gripping more than your fronts, pushing you through the turn, if the degree of the turn is too tight at your given speed, can cause you to not be able to make the "turn-in" at the apex and hit the outer edge of the turn or fly off the edge.

Stay as close to OEM tire specs....and if you swap rims, make sure you use proper PLUS sizing characteristics.

Tim