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Old 01-06-2010, 08:25 AM
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Arrow BMW 1 M coupe spyshots and CGI thread



BMW to unleash 350 bhp M1

BMWs M division has started development of an M version of the 1-series coup, set to be equipped with a twin-turbocharged six-cylinder engine producing 350bhp.

The new two-door, details of which were first uncovered by Autocar back in November, has now been added to BMWs stable of future production models, with right-hand-drive UK sales set to begin in mid-2011.

The decision to put the car into production has been attributed to an overwhelmingly positive reaction to recent customer clinics, according to at least one high-ranking BMW official. Aimed at attracting younger customers to BMWs performance cars, the new coup is set to become the M divisions most affordable model.

It will slot into the range beneath the M3 coup, and should cost around 38,000, 8000 more than the 135i Coup M Sport. That means it will compete directly with Audis forthcoming RS3.

Revealing the plans for the new 1-series-based model, M division boss Kay Segler said, I want to set a clear signal that our products are financially accessible.

With the modular production processes in place at BMW, it is possible to create performance cars that customers can not only dream about owning but also realistically afford.

BMW is still deciding whether or not to call the car M1, a name originally used on the firms legendary road racer supercar in 1978. Inspiration for the new car comes from BMWs tii concept, a sporting version of the 1-series coup that was revealed at the 2007 Tokyo motor show.

While the powerplant in that car was never revealed, the new M car will use a revised version of BMWs latest turbocharged straight six. In standard guise the 3.0-litre unit, recently unveiled in the 535i GT, uses a twin-scroll turbo aimed at providing a more linear delivery of power and better fuel economy than the earlier twin-turbocharged unit used in the 135i.

For the new M car the engine will re-adopt a twin-turbocharged layout, although the new system is said to differ quite dramatically from that used on the older engine; its likely to get a new turbo and a more efficient intercooler arrangement.

The modifications are said to be on a similar level to those seen in the recently introduced X5 M and X6 M, whose 547bhp twin-turbo 4.4-litre V8 has big changes compared with the standard V8 versions used in the X5 and X6.

The output of the new M six-pot is expected to climb to around 350bhp, some 48bhp more than the existing 135i M Sport but 70bhp less than the M3s naturally aspirated 4.0-litre V8. More than outright power, though, it is torque that is likely to play a more significant role in defining the new cars character.

No figures have been released, but with BMWs standard turbocharged 3.0-litre six already producing an M3-equalling 295lb ft, the newly developed M version of this engine should be good for at least 310lb ft.

The basis for the new M-car is todays 1-series coup. Its driveline is likely to feature a standard six-speed dual-clutch gearbox and an electronically controlled M differential.

With a kerb weight of not much more than 1500kg, its straight-line performance should be close to that of the 1580kg M3. A relatively short 3.15:1 final drive promises a 0-60mph time of around 5.5sec.

Fuel-saving measures such as brake energy regeneration and possibly a stop-start system should also ensure the new M1 is no thirstier than the 135i, which is rated at 30.7mpg in six-speed manual guise.

Underneath, the layout of the 1-series coups MacPherson strut (front) and multi-link (rear) suspension will remain the same. However, BMWs M division engineers have set about altering the suspension properties, with firmer spring and dampers and a new set of bushes, along with lightweight 18-inch alloy wheels. Were aiming to make it a lot more dynamic than the standard 135i, said Segler.

Setting the M1 apart from the standard 1-series coup will be a typically subtle M division body kit, including a deeper front spoiler, flared front wheel arches, chunkier sills, a rear deck spoiler and a deeper rear valance with four chromed exhaust pipes.

Assembly of the newest M-car is likely to take place at BMWs Leipzig factory in Germany. alongside standard versions of the 1-series coup.

But with 18 months to go until it goes on sale in the UK, Segler is remaining coy about projected volumes. Were confident it will draw new customers to the M line-up, but in these difficult economic times its impossible to say how it will fare, he said. It does, however, reveal where the brand is heading

BMW to unleash 350bhp M1 - Autocar.co.uk

Last edited by LeMansX5; 07-08-2010 at 08:41 PM.
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Old 01-06-2010, 10:31 AM
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Pretty cool, but isn't the new 1-series just around the corner? Why not wait for the new platform and use some high-power turbo 4-cylinder and make the car much more lightweight?

Also, I hope that 0-60 estimate of 5.5 seconds is an error. A 135i does it in 5.1 according to BMW USA.
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Old 01-06-2010, 12:19 PM
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A 135i coupe does 0-60 in 4.5 according to me, and Car and Driver magazine.
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Old 01-06-2010, 12:50 PM
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Not really quick but not too heavy for the power. Could be nice and agile.
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Old 01-06-2010, 01:08 PM
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Quote:
Originally Posted by Viperfreak2 View Post
A 135i coupe does 0-60 in 4.5 according to me, and Car and Driver magazine.
Ha. Yeah, I was just sticking with BMW figures, which I know are typically conservative. It is one of those things where if you ask 10 different sources you will get 10 different answers. I am sure the M version will be faster than a stock 135i though.

Wonder how much more turners will be able to squeeze out of the new M's motor? Pretty sure 400 hp+/- is attainable out of a 135i with tuning.
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Old 01-06-2010, 03:50 PM
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I would imagine that is supposed to be "3.5 sec"...
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Old 01-06-2010, 04:04 PM
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That sounds more like it!

A good reference will be the new Z4is with 340hp with it's overboost feature. A stock Z4 (non is) ran 4.1 0-60 in a recent mag test.
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Old 01-06-2010, 04:22 PM
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3.5 and now you are talking seriously quick.
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Old 01-06-2010, 04:25 PM
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BMWNA lists the fastest of the M3 as 4.5 sec. I don't see them making the M1(name?) faster. Even if 4.5 is a high estimate for the M3, I bet it is still going to be faster than this new car.
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Old 01-06-2010, 04:34 PM
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That makes sense given they state this will be the entry level car.
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