Tentatively thinking of selling my M Roadster due to lack of use - I've been and will likely be gone every weekend throughout this and future summers to come due to work. And let's face it, this is a summer car. I also just put new Pilot Spots 2s on the back as well (50 miles on them). Purchased from Vancouver last year and am the third owner.

First owner invested about $60,000 in the following and had this to say:

Featured in Bimmer Magazine Nov 2008
S54 engine, 5-speed manual
Performance: Dinan S2 package - serial # S20630 (370 horsepower)
Dinan cold-air intake
Dinan high-flow throttle bodies (currently not installed, see further below with 2nd owner)
Dinan free-flow exhaust
Dinan stage IV suspension
Dinan adjustable front / rear swaybars
Dinan front strut tower bar
Dinan front camber plates
Dinan adjustable rear subframe (SUBFRAME REINFORCED!)
Dinan 3.38 limited slip differential
UUC Motorwerks lightweight aluminum flywheel
UUC Motorwerks M5 clutch kit
UUC Motorwerks short shifter with DSSR
Dinan Brembo front / rear big brake kit (slotted)
Dinan differential reinforcement kit (including trunk floor reinforcement)
Kinesis K19R 18" x 9" forged front wheels Kinesis K19R 18" x 11" forged rear wheels
Yokohama 255/35/18 front tires Michelin Pilot Sport PS2 315/30/18 rear tires

Stereo: JL Audio 500/5 5 channel power amplifier
JL Audio 10W0 subwoofers (free-air)
Morel Dotech MKII 5 front speakers
Morel Integra Ovation rear speakers
Alpine CDA-9855 CD receiver iPod interface

Other: Custom black suede seat inserts
Custom black suede steering wheel
Custom black suede shift knob / boot
Custom black suede e-brake handle / boot
Blacked out front kidney grilles
Blacked out fender fins Blacked out side markers
A/C ice cold (entire AC components brand new)
No accidents, Non-smoker, Seats like new, Upgraded sound system, Very clean interior

Second owner removed the original S54 Engine with a replacement that had 6,000 miles from new from a wrecked E46 M3 and upgraded the rod bearings, so you don't have to worry about the usual catastrophic engine breakdown S54s experience. He chose not to install the headers, though I have those and can include them. He also replaced the top with a brand new one (currently perfect), refreshed the interior and the suede, performed a host of mechanical tune ups, changed the notoriously poor stock headlights with tasteful aftermarket projections (though the originals are included), and even more I can't recall right now. I then performed about $4K in tune ups as well to get it in its current happy condition, with a few caveats below.

Downsides:
The traction control box can be flaky and fail, so I've made a habit of disabling it since it's a rather crude DSC system anyway that kills power a bit violently. I.E. know how to drive a car with this much power and respect it for what it is when you hit the throttle, and you'll be a happily rewarded enthusiast.

The low tire pressure light seems to go on every once in a while as well, then goes away, regardless of tire pressure. I understand the TPMS system is battery powered, so those batteries are likely dead.

AND THE BIG ONE: well, sorta. It's currently failing smog due to, in all my research and understanding, failed sensors on the cats which are throwing a code. I've been spuriously told by a mechanic to replace the cats on it, and simultaneously advised against that by every forum and authority I've met. So, she's currently sitting parked off-street under a cover waiting my next move (which I also don't have time for at the moment). She's my dream car and I couldn't imagine wanting anything more from a sports car (power, sound, handling, style, sound system, etc), but I'm thinking of going car-less for a while to simplify. Will I regret it? Who knows, but for now she's doing me no good perma-parked and in limbo, and given how special a car it is, that's weighing on me for irrational car guy reasons.

Please understand this before replying, I WILL NOT ACCEPT LOW BALL OFFERS AND THE MERE ACTION OF SUBMITTING ONE WILL DISQUALIFY YOU FROM RECEIVING A RESPONSE. Also, given the smog situation, I'm not totally sure how to offer test drives, so there's that. All this adds up to I'm curious to find exactly the right buyer looking for a rare specialty car (that has actually appreciated), otherwise I will have absolutely no issue keeping it. This is me testing the waters and seeing what happens, and I am in no rush. I also have a friend who is planning to purchase it early next year if I don't have a buyer who meets my terms exactly, so once again, please don't waste either of our time looking to negotiate me off said terms.

With that in mind, let me know if you're interested, thanks for reading, and happy cruising!