vibrate

for the past month, usually on my way to school, i notice a very slight side to side vibration/shaking. i know its not the road because i've tried it on different flat surfaces and i know its not my wheels (when looking out the windows, the wheels are perfectly straight, and from the car behind...

Hi all, (Lexicon 17 Speaker, 528 Watt System from the Tech Package). I'm looking for some suggestions/feedback that would possibly help me with this situation, it would be greatly appreciated so long as it's constructive in nature;(please don't say lower the volume or anything silly...