275/35/18 up front on Forgestars. Silky smooth at all highway and track speeds.
I did used to run Starquest wheels on my 240sx at the track and got some very bad vibration like you are talking about. I had the wheels balanced, and my suspicion kind of went to the spacers, but they weren't hubcentric.
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2011 Nissan 370z Black Cherry Sport Pkg - Daily Driver, , 1960 Morgan +4 fun car, 1986 BMW 325ES, 1998 M3 and 1996 Spec Miata - Race Cars
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