25gtrbo Posted April 11, 2011 Share Posted April 11, 2011 hey i have a question about bc coilovers.. i just installed them on the car and know it has alot of vibration when im driving. the faster i go the more vibration i get.. if i lower the car do i need to adjust the preload or should i keep it the way it is from the factory.. should the spring be able to move by hand when not installed? Link to comment Share on other sites More sharing options...
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