One of 1,815 Z4 M Coupes made for North America, and fewer than 100 that are supercharged! I'm selling my highly upgraded Z4 M Coupe only because a new car needs the space in the garage. It will be very tough to see it go--I've put a lot into it, both in personal work and cash. It has been carefully maintained under my ownership (California car and always garaged, of course)--and I have been the longest owner in both time and milage (about 4 years, and ~26,000 miles). CLEAN TITLE, no accidents of any kind.
The car has 51,000 miles and a long life ahead of it. There are a few isolated cosmetic damages; the previous owner scuffed the front right of the bumper on a curb, but it is now better-protected by metal skid plates I installed on the bottom of the bumper. The paint is in good condition--no dents or major scratches aside from the bumper--though there are minor imperfections. The interior is in great condition overall, especially the leather throughout, except for some scratches on the driver's side door sill. I have always driven and treated the car with great care for its longevity: minimal engine load until both oil and coolant are fully warmed up (which takes longer with this car than many), carefully avoid potholes and rough roads, used a sun shade when parked to avoid UV damage to the interior, personally cleaned and conditioned the leather, etc etc...
The car drives incredibly. Even before modifications, this was one of BMW's fastest and lightest production cars. With the stage-2 supercharger kit, it attains supercar-like performance and high overall refinement for an unbelievable value (at least now that I've spent the money and time tuning the supercharger for you!). Maintenance is completely up to date with a full records history--most importantly, the expensive Inspection II service has been recently performed, which includes a painstaking manual valve adjustment. I personally found the best BMW dealer tech on the peninsula and gave him a cash tip to ensure his work during this important job was of utmost quality. If you buy a lower-milage Z4 M, you'll be looking at well over $2,000 in the near future for this service.
Test drives can only be offered to serious buyers. This car is extremely powerful, and while safe and capable (side air bags, stability & traction control, astounding brakes), it needs to be treated with respect.
Headline features / improvements:
- ESS VT2-500 Supercharger Kit--"stage 2", including a large and extremely effective intercooler. Rated 500 BHP and dyno-tested at corresponding RWHP. Cost over $15,000 with professional installation, testing, and tuning.
- High-tech digital gauge system integrated behind the rear-view mirror glass. Invisible with the car off, seen as an overlay on the image in the mirror when the car is running. Air/Fuel ratio and Boost gauges are present on the left and right, as is a GPS-assisted Radar/Laser/Red Light Camera detector. Over $3,500 to purchase and install. I am going to miss this on my new car! This is a really unique feature, but I don't have photos right now (check out radar-mirror.com)
- BMW European exhaust manifold. improves performance beyond the standard supercharger kit, and produces a stunning exhaust note. Carefully installed personally (an entire day's work). Over $1,000 in parts.
- LoJack Vehicle Recovery system.
- Adjustable camber plates in front and lower suspension arms in the rear from the best suspension part manufacturers available for the Z4M.
- Full set of expanded-width Michelin Pilot Super Sport tires (considered by many to be the best performance tires available). Plenty of tread left (more than 50%).
- Brand new front brakes, less than 1,000 miles on them. The front brakes are about 4x more expensive than the rear, and lasted the whole life of the car, so they will not have to be redone until after 100,000 miles.
- High quality window tint on the side and rear glass (no bubbles, looks stock but keeps the heat out!
- Numerous dealership-installed replacements, including a new VANOS system (!!! normally $5k+ replacement and the major problem area with factory S54), BMW OEM windshield (original cracked by a rock), navigation system screen, interior trim pieces, and shift knob.
- Extensive, detailed service history and full original manual (leather binder).
- Tons of extras like BMW perfect-fit sun visor, touch up paint (haven't needed to use it yet), short shift kit, new set of spark plugs (though the currently installed ones will last at least 30k more), the original intake parts from before the supercharger and original US exhaust headers, etc.
- Bavarian Soundwerks Speaker Upgrade
- Navigation system with Bluetooth connectivity (part of the premium package)
- Frequent changes of all fluids, including half the factory required milage on engine oil; supercharger oil, differential and transmission oil, brake fluid. Always top-tier fuel manufacturers.
- Much, much more!
More details on the powertrain and driving characteristics:
- Supercharger is a centrifugal type, basically a belt-and-gear-driven turbocharger compressor wheel. Maximum boost is about 7-8PSI, which builds roughly linearly throughout the RPM band.
- In addition to a large intercooler, the oil cooler is tripled in size and keeps oil temperatures slightly lower than stock, even under load.
- The S54 motor is a 3.2L inline-6 with a 7,800RPM redline; at the time of its launch it had the highest naturally aspirated output per liter (333HP from 3.2L) of any BMW engine in history, and remains one of very few engines to break 100HP / Liter without forced induction.
- The motor's natural tendency to make the greatest power at higher RPM combines with the centrifugal supercharger's own boost profile to produce a truly exceptional surge of power from 5,000RPM-7,500RPM.
- S54's have individual throttle valves directly in front of the intake valves for each cylinder, which provides amazing throttle response. Combined with the always-on supercharger that has boost at the ready while driving, at 2,000RPM or above the response is absolutely immediate.
For more info, please feel free to email me (and pass on your phone number if you'd prefer to talk).