need your opinion / stereo

hey all!

I just need your opinion on something, im thinking about puttin a 10" sub and a 150w (RMS) amp in my 99 323is...basically just want it for a little more bass and some "fullness" in the music. The only thing that concerns me is once i put it in and run through it for some time, my trunk will start to rattle and the panals in the car, I had this system in my civic and it did that to it, but you cant compare a civic and a BMW!
I was just wondering what experiences you have had with your system and how "tight" the car has stayed with the vibrations, and if dynomat is really needed

thanks!:)

i have an 86 325e and mine hardly rattles and i have a 12" with a 800 watt amp so i wouldnt belive yours will rattle at all

If you are worried, get some of that sound deadening material for your trunk that absorbs extra sound. I had two twelves in my last car, rattled like hell when I had it cranked up. But then again, I really don't care to much, I think the stock stereo set up is fine, only addition I have to mine is a Sirius Sportster that actually looks really cool, completes the whole cockpit feeling of a Bimmer.