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BMW M3 turns 25

The story of an exception.
Filed under:  Brand Related
 
Comment(s): 7
 
 

The anticipation began in August 1985. That summer Germany’s automobile magazines built up their readers’ expectations for the fastest 3 Series BMW of all time. The key data revealed a sports car that would punch way above its class: 200 hp, top speed in excess of 230 km/h, sprint from a standing start to 100 km/h inside 6.7 seconds.


bmw m3 coupe 10 00

2010 BMW M3 Coupe.

However, the story was that “the most dynamic BMW 3 Series drivers” would have to wait until mid-1986. The pundits were right on that count. But one prediction missed the mark by a mile: anyone who “wants to be in the A Team needs to be turbocharged under the bonnet”. Not true.

The BMW M3 became the most successful touring car in motor-sport history. The M3 project was launched just a few months earlier. Production of the M1 mid-engine sports car had already been discontinued for some time and BMW CEO Eberhard Kuenheim commissioned a design for a successor, almost as an aside, according to legend. After one of his regular visits to Motorsport GmbH in Munich’s Preußenstraße he said, almost as he was leaving: “Mr. Rosche, we need a sporty engine for the 3 Series.” His aspiration was in good hands. Motorsport GmbH with its managing director of technical development Paul Rosche had demonstrated its expertise with the legendary 5 Series saloons driven by M engines as well as developing the Formula 1 turbo engine that powered Brazilian Nelson Piquet to win the World Championship in the Brabham BMW in 1983.

The new 3 Series engine had something in common with this: the crankcase. It originated from volume production and actually formed the basis for the two-litre engine with four cylinders. Four cylinders meant less weight and high torque, an ideal platform for a sports engine in the projected displacement class. Naturally enough, the series four-cylinder engine was much too tame for a sports engine. A comprehensive power boost was called for in order to turn the plucky daily workhorse into an athletic and sporty power unit. The BMW design engineers increased the displacement to 2.3 litres and applied a formulation that had already achieved significant successes over a period of many years: four-valve engineering.

There was also another reason for the decision to opt for a four-cylinder engine and not adopt the six-cylinder engine introduced in the BMW 3 Series. The longer crankshaft in the big engine started to vibrate much earlier than the shorter four-cylinder shaft. The design engineers therefore designed the crankshaft drive of the BMW M3 with sufficient torsional stability to achieve 10,000 revolutions a minute and more. By comparison with the four-cylinder engine installed in the series vehicles, this represented an increase of more than 60 percent. The rated speed for the road version of the BMW M3 was still significantly below the critical range at 6,750/min and therefore offered sufficient scope for further developments.

Paul Rosche recalls: “We started work immediately. One advantage was that the big six-cylinder engine originally had the same cylinder gap as the four-cylinder engine. We therefore cut two combustion chambers off the four-cylinder head of the M88 and bolted a panel over the hole on the rear side.” This meant that the new four-cylinder engine had a second forebear.

The six-cylinder engine that had initially created a sensation in the M1 and had meanwhile transformed the M635CSi into one of the fastest coupés in the world. Paul Rosche: “Whether you believe it or not – we had created an outstanding four-cylinder engine for the 3 Series within the space of two weeks. Under the development name S14, this engine was to generate headlines in sport and in volume production over the years to come. One Sunday, I drove to von Kuenheim’s flat and gave him the car for a test drive. When he came back he said: ‘Good, I like it.’ And that’s how the M3 came into being."

(source: BMW)


bmw frozen gray me coupe 11 01

2011 BMW Frozen Gray M3 Coupe.

bmw m3 gts 10 03

2010 BMW M3 GTS.

bmw m3 sf1

2008 BMW M3.

bmw m3 conv 06 05

2006 BMW E46 M3 Convertible.

bmw m3 csl frontside

2003 BMW M3 CSL.

bmw m3 2

2002 BMW M3.

bmw e30 evo1 m3 88

1988 BMW E30 Evo1 M3.

bmw e30 m3 cabrio 88

1988 BMW E30 M3 Cabrio.

bmw e30 m3 87

1987 BMW E30 M3.

bmw s54 eng

BMW S54 M engine.

bmw logo 1

BMW logo with "The Ultimate Driving Machine" tagline.

Carlos's comments

I love the M3. I've owned two (plus the Mcoupe with the M3's S54 engine). My first was a 2002 coupe and my current is a 2006 convertible. The current 414-horsepower monster, the first with a V8 is simply stunning, especially in white with it's carbon roof.

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LINKS
BMW Museum   Official site.
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COMMENTS
marro22626 days ago

There is nothing to knock this car performance-wise, but I think it's butt ugly. Bangle's worst design IMO. But the E46... now that couldn't be more handsome. I still remember thinking that those 10-spoke wheels were HUGE for a production car.

Carlos, if you ever want to sell yours to a poor graphic designer for a good price, hit me up!

CT2626 days ago

Hey Marro2, as a matter of fact, I was just going to post it for sale. Time for an upgrade. Email me if you're interested.

marro22624 days ago

thanks Carlos, but unless you'll take an even trade for an '07 Steeda Ford Fusion and some no-charge freelance design work, that's way out of my league. haha. good luck with the sale though.

CT2624 days ago

It's hard to part with this thing, we'll see what happens.

delroy2620 days ago

Hey this is the brand which is liked by everyone. You can say BMW is an epic in the German automotive industry. With its sneak design and interiors it attracts every consumer.

E30 M32620 days ago

Wrong. The M3 turns 25 in October 2011 --which is 25 years after the first of "just-under" 18,000 cars were produced....

Mads Jensen2217 days ago

I just love the BMW M series cars - i have owned both a BMW E30 M3 and a BMW E36 M3 - it's very good cars, and soo fun to drive, due to the RWD and great performance.

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