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Tuner Tuesday: Dinan-modded 2008 BMW 550i

Perhaps it’s fitting that if you hit the shift key on the keyboard when attempting the M-Stripes in script you get three questions marks. We’ve recently had a few features questioning whether or not you need the ///M Badge on your 5-series; most recently, Paul looked at the E34 lineup with his M5 v. 540i post. The question has remained throughout the various iterations of the 5-series; while there was a pretty big gap in performance between the E28 535is and M5, those gaps have narrowed in subsequent generations. Couple that with the increased costs of ownership of the M-branded 5 and the higher residual value, and there are some good arguments to look at the top-of-the-range normal 5 versus the Motorsports version. When it comes to the E60, that’s especially true in my mind; the M5 had that great screaming V10 motor and many are fitted with the 7-speed break-your-neck-shifting SMG gearbox. Those are great items to have when you don’t have to pay the bills to repair them, but now the best part of a decade on despite the inexpensive entry price for E60 M5s relative to the performance you’d get, they just seem like a nightmare to undertake ownership of. The answer, then, may be to find a lightly warmed over 550i:

CLICK FOR DETAILS: 2008 BMW 550i on eBay

Year: 2008
Model: 550i
Engine: 4.8 liter V8
Transmission: 6-speed manual
Mileage: 117,670 mi
Price: No Reserve Auction


You are viewing an EXTRA CLEAN… ONE OWNER… 2008 BMW 550i DINAN 5. Iconic, raw power, luxury, simply put, a high performance sedan for the everyday driver. The BMW 5-series is a class leader in performance, safety and luxury. This vehicle is Autocheck and Carfax certified, with a CLEAN title and CLEAN history. It is equipped with the fully loaded premium and M//Sport package. This BMW features plenty of top-of-the line amenities which include; leather seats, heated seats, multi-directional power seats, memory seats, power windows, power locks, power exterior mirrors, navigation, i-drive information system, premium audio, xenon head lights and much more (view pictures and information below for full detail). You will enjoy all the comfort features this vehicle offers in a clean good running vehicle. The exterior finish is CLEAN, it is in very good condition with respect to the age and mileage of the vehicle. The interior as shown in the pictures is also CLEAN, it is in very good condition with respect to the age and mileage of the vehicle, and appears to be very fresh. It is apparent that this one owner vehicle was well cared for (view the pictures below for full condition detail). Overall, this is a good condition vehicle inside and out, and it runs and drives just as good as it looks! The powerful 4.8L V8 engine moves this vehicle with ease. Power is delivered through a smooth shifting 6-speed manual transmission. The Dinan tuned ECU, Dinan exhaust, Dinan intake and Dinan high flow throttle body help this BMW accelerate like a rocket and maintain power on demand. It is truly a joy drive this vehicle. The ride is firm and well-controlled, and the front end is tight. I have personally driven this vehicle and logged nearly 200 miles, so I am very familiar with this vehicle.This vehicle was inspected and fully serviced with a synthetic Mobil One oil change & filter, new brake pads front and rear, new water pump, new thermostat and BRAND-NEW tires. I also have three sets of keys, two sets of floor mats, and the owners manual. This is road ready vehicle! I provide MULTIPLE HIGH RESOLUTION photos, please view the pictures and always feel free to call, text 832-607-6101 and/or email me with any questions. Bid with confidence on this vehicle with someone you can trust. Don’t miss this chance to own this one of a kind beautiful vehicle. BID WITH CONFIDENCE, THIS VEHICLE IS WORTH EVERY PENNY!!! We are a Texas Bonded & licensed Dealers. Please be sure to read our terms and conditions.



We post MULTIPLE high resolution photos of interior and exterior condition.

This vehicle was Carfax AND Autocheck verified.

We provide courtesy transportation from the Houston airport to our dealership.

This vehicle has been staff road tested and inspected

Vehicles undergo a lube service (oil & filter change).

All fluids are examined and topped as needed.



.:Thank you for you interest in our online auction – Robert P (eBay Internet Sales Manager)

Bid with Confidence, and please, contact us with any questions you may have. Please either email us at ,call or text us at 832-607-6101.

Every effort is made to describe each vehicle exactly as it is. Your satisfaction is assured. As with most pre-owned vehicles, minor wear may be discernable and degree of wear is often related to age of the vehicle. We look forward to serving you and assisting you in all aspects of the sale. Good Luck and Happy Bidding!!





Push Start/Stop

Front & Rear Parking Sensors

Premium Wood Trim Package

Sport Wheel

Sport Seating Package

Heated Front Seats

Memory Seats

Power Rear Sunshade

Rear Door Privacy Sunshades

Power Sunroof

Premium Audio

Xenon Headlamps

Steering Wheel Audio Controls

19″ Inch Wheels

Dinan tuned ECU

Dinan exhaust

Dinan intake

Dinan high flow throttle body


Out of the box, the 550i was no slouch. I remember having a BMWCCA student with one at Lime Rock Park and I was impressed with the seemingly near endless power it had. The self-inflating seats too a bit to get used to and outside it was not the prettiest car, but it was impressive and modern feeling, and around the track the performance gap to the M5 was imperceptible. That’s likely because the 550i had nearly as much power as the E39 M5 at 362 with matching torque from the 4.8 liter V8. Add in the Dinan modifications that this car has and you’re at M5 power levels. This example looks quite nice in black over tan with the Style 172 wheels – one of my favorite newer BMW designs. The fact that it’s a 6-speed manual only adds to the appeal, but you won’t be paying M5 bills for a 550i. That’s because the average price on a 2008 with the mileage this car has accrued is only about half what a M model would bring, at around $13,000. For that amount you get a very fast and still modern BMW with a V8 soundtrack and 6-speeds to explore on your own. That’s not a bad proposition to consider even if the E60 isn’t the prettiest 5 made.



  1. Brad
    Brad January 21, 2015

    This Honda Accord sure looks like what it is, a Honda Accord.

  2. Z
    Z January 21, 2015

    I’m trying hard to like E60 styling but failing. As Brad said, I think of Honda Accord or similar.
    I wonder how many E60 owners pull up next to Kia whatever at the light and the woman in Kia tells to her husband:
    Look honey, did they come out with new model of our car?

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