Hey guys,

Curious what your opinions are, I have a 1996 M3 with 175,000 miles on it.
The miles can be described as primarily highway, with lots of hard
driving.  Cruising speed is 90MPH @ 4,000 RPM at almost all times.  All
owners have been very easy on the brakes, clutch and driveline in
general.  Original clutch and brakes are from February 2002 and still
quite fine!

Recently I've had to replace radiator, front lower control arm bushings,
rear shock mounts, thermostat and housing, and a few other little things.
During this time I also planned but didn't get to the fuel filter and it
also needs a flexdisc as it has cracks in it.  

So there's other issues I need to think about, RTAB and subframe bushings,
rear differential bushings, rear differential fluid and manual trans fluid
(it's leaking out the passenger side near some electrical socket).

Aside from that nothing has EVER really broke on the car from day one of
it's life.  As in most everyting is factory original.  It's garage kept,
etc.

Can anyone with an even higher mileage S52 engine or perhaps S50 give me
some insight on what I am getting into from 175,000 miles to 225,000
miles?  Could the clutch possibly last that long?  What about water pump?
Should I replace it preemtively?  THe cooling system is quite fine.  What
about a/c?  The compressor seems fine yet clicks now and again, especially
on the hottest days.  

What about the majors like head gasket, or oil pump failure.  Timing chain
failure?  How long can I possibly consider this thing a reasonable daily
driver like I have been?  

Bear in mind that most of my "75,000 mile maintenance" didn't need done
until 175,000 miles.

I'm also wondering what I'm getting into from a cost standpoint.  I need
to understand the benefits/negatives of keeping this car versus getting
into an E46 with under 100,000 miles, and I was hoping someone who has a
lot of experience with high mileage bimmers could lend a tip.

Thanks,
Mark