I'm  considering selling my beloved 2000 BMW M-Roadster.  I've owned this car since 2003. It's a garage queen.  Regular maintenance at Dinan in Morgan Hill, and also in Mountain View and Campbell (when I moved from Morgan Hill to Santa Clara / San Jose in 2008). 

The car has some modifications - otherwise it's stock.   The mods were:

1) The Dinan Supercharger (I had the Morgan Hill Dinan facility install it)
2) Randy Forbes subframe reinforcement (got the cool looking differential with fins)
3) The gear shift knob (previous owner did this mod)

I had the roof was replaced in 2010 by the BMW dealer local to me.

By the way, the subframe reinforcement is a must for these cars (Google Z3 Subframe).  I would not considering driving a Z3 without reinforcement.  The Randy Forbes modification is more of a re-design rather than patch work - in other words one of the best reinforcements (if not the best) out there.   Also, I had the Randy Forbes subframe modification done way before there was any significant problem or damage.  I contacted Randy Forbes asking who in California would be best to install his subframe reinforcement kit, Randy told me Performance Technice was the best.  I had the the subframe work done by Performance Technic in Dublin, CA (actually, I think they used to be in Pleasanton)

One picture (the first / featured image) was taken recently, but the others (that were done professionally) were from 2003 -  will update as soon as I can - but the car is in great condition. 

There ARE normal amounts of wear and tear for a vehicle this age and mileage.  Some minor scratches and minor (very small) dent from a car door.   The roundel on the front is fading and abraded from normal highway driving. This can easily be replaced.  Some of the red colors for the ///M logo have faded quite a bit.    The glove box rattles (kind of annoying - but I hear there's a fix for that - otherwise it is functional - opens and closes normally). 

David