[quote author=Kill Your Idol link=topic=68211.msg1194088#msg1194088 date=1170916131]
I have an OEM sunroof and I can
hear water dripping.. but I cannot see it or feel it.. or pinpoint where it's actually coming from.
And I've only heard it after I go through the car wash.
This wouldn't be the sunroof, would it?
[/quote]
Maybe, maybe not. If it is leaking, it could be dripping down in to your headliner. After a while your headliner will discolor & stain. This is what happened in both my cars. It used to run out on me when I backed my car out of my steep-sloped driveway to the street.
I'd be surprised if you could hear a drip if your sunroof is leaking. Just not enough travel space for the water to make a splash noise. I'd focus on your doors, trunk/hatch, or wiper cowl area. A trick I've used for isolating noises is to listen thru a 1-2 foot section of an old garden hose, kinda a poor mans stethoscope.
Easiest solution is to stop using hi-pres car washes.

Hi pressure car washes force water into spots that normally isn't forced into. That, and bad for your paint/wax job. But if you don't have a driveway & hose your SOL.