the e30 nigglies to look out for or to fix when u get a e30 are one or more of the following:
1) check control light
2) door lock can get stiff and temporarily seize..lube required
3) windows can start moving slower in cold conditions(electric) once again
lube required
4) stuttering wipers - remove old rock hard grease from motor and regrease and clean.. fixes it
5) lil globes on electric window buttons
5) corroded door switch terminals can cause havoc with alarms!!!
oxidised more than corroded..
6) almost flat door rubbers
7) almost flat boot rubber

9) rubbers from 6,7,8 are shot from age. needs replacing
10) little fan behind OBC gets noisy..i replace mine.
CALLING ALL E30 fans to add your NIGGLIES to this list.
lets make a list of all these things for first time buyers..
im finding my (ive had it for 8months) e30 325i is a lovely car but there are all sorts of nigglies that need attending too..i suppose its the age.. but the foundations of the car are good. just the small things.. that keep popping up..