hi

just bought my friends 85 735i automatic after i sold my 89 nissan 240sx

thought id just say hi and let everone know that ill probably be hanging around these forums for a while finding out information on my purchase and whatnot

btw, the only work its needs is powersteering pressure sensor, rear suspension, and front brake resurfacing...

The BMW rotors don't take well to resurfacing, they are thin to save weight and will warp when they get thin. Your front suspension bushings may be the culprit. Save a ton of money to fix it up.
Welcome.

Welcome! I bought an 'older' 7-series and started upgrading things here & there. We all find out sooner or later you need good tunes to match your ride. First step for tunes is you are going to need a an external subwoofer; the smallish speakers that fit in the tight spaces of the doors/shelf just aren't sized to move enough air. The problem to get balanced sound in BMWs (balanced = balanced, not Bazooka-like weaponry) is almost strictly in the domain of the low-end. Just go to eBay and search on BassLink. Not only will you find BassLink subwoofers under $200, you will also find BMW-specific install kits. The $250 or so you spend on the upgrade will likely become the most memorable $250 you will *ever* spend on your Bimmer.

You can read a post/article at:
http://www.wakajawaka.org/bmw-audio-upgrade/
or just go to eBay and do an eBay search on BassLink.