Ryan, I've had similar issues. Here's what I think is going on with your car.
#1) Wheels aren't wide enough for your tire size #2) Need a stiffer sidewall via more air pressure or run tubes, or both.
Just my thoughts from years of messing with stuff on street cars.
Have fun and be safe!
Larry
how much movement do you have laterally speaking? you cant stabilize that much sidewall.. way to much tire for the rim. sidewall steering... a shock change will help but its not the real fix....
