i am finding that i have to constantly correct the steering w/ the s2000 to keep it straight on high speed runs and sometimes even normal highway speeds....do you guys see this also? I do have aftermarket 18" w/ AVS ES100 tires on it.

Thanks

 

Exatcly what speeds does it become unstable? Does it pull only to 1 direction all the time or does it become squirley

 

i've never had this problem. i've even had the car up to 120mph with my snow tires on and it's been fine.

 

is the car dropped.... either way, get it aligned. probably have too much negative camber, and too much positive toe. car will be a drifty sucker if this is the case.
good luck. dave

 

seems to become squirley compared to my other car and some others i've owned. Maybe i just have to get use to it.

 

prob just needs alignment..i've had mine at 130+ at road courses and it went straight

 

mine had the same squirley feeling, even had it aligned. feels the same

 

I've topped out at 146mph on the speedo and not experienced any problems. Could be alignment, or tire pressure also, it should definitely be checked out and corrected though as it could have disastrous consequences.
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do you still have the "reverse" mudflaps installed near the front wheelwell? they supposedly help stabilize the car during high speeds.

 

If you posted your alignment specs, I could give you a pretty good idea of how your car will handle.