Have a 2000 Civic Si that is currently SSC spec. Running a PDX this weekend at Road Atlanta and had the following symptoms occur on the 3rd session of the day.

The car developed a slight vibration and pull to the left. Continued for another lap and both conditions got worse. After pulling into the pits and checking the car for anything obvious (like loose lugs/tire pressures) went out and had same symptoms which got continually worse. Parked it.

On the drive home, wasn't comfortable going more than about 45 mph (thank goodness I live 5 miles from RdAtl.

The car actually brakes straight and the vibration is not really felt in the wheel which makes me suspect the rear end.

Jacked the car up at home and looked for anything clearly amiss. I expected to see something loose but found nothing.

Anyone have an idea? Would the failure of the large rubber bushing in the control arm do this?

Thanks,
Rory