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      08-15-2018, 05:29 PM   #1
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The New BMW 3 Series G20: Endurance Tested on The Green Hell

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The new BMW 3 Series Sedan: endurance test in the Green Hell.
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August 16, 2018

Along the way to serial production maturity, the seventh generation of the successful BMW sports sedan has undergone driving dynamics testing and set-up on the legendary Nürburgring Nordschleife.


Munich. The next generation of the BMW 3 Series Limousine is just completing the crucial stages on the way to serial production maturity. There was only one possible setting when it came to driving dynamics testing and set-up runs: the legendary Nordschleife at Nürburgring. Test runs at the "Green Hell" traditionally serve as an endurance test for the drive and suspension technology of newly developed BMW models. A particularly extensive testing programme was developed for the camouflaged prototypes of the new BMW 3 Sedan. After all, the comprehensive renewal of the wheel suspension, steering, damping/suspension and brakes provided the developers with a broad range of opportunities to optimise ride comfort and dynamic performance, enabling the ultimate sports sedan for the mid-range premium segment to mature lap by lap.

The underlying concept of the four-door model shows just how much the development process for the new BMW 3 Series Sedan is geared towards enhanced sporty flair. The centre of gravity is some 10 millimetres lower than in the predecessor model, axle load distribution is balanced at a harmonious 50 : 50 and the total weight adjusted for fittings is as much as 55 kilograms less. Meanwhile the rigidity levels of the body structure and suspension attachment – so crucial to the steering set-up and ride acoustics – have been significantly enhanced. The car's agility and steering precision benefit from much expanded track widths, while increased wheel camber levels offer additional potential for maximum transverse dynamics.

In terms of the engine portfolio, one particularly striking feature is a thoroughly revised 4-cylinder petrol engine. It is the most powerful 4-cylinder engine ever to be fitted in a BMW series production model. Yet its fuel consumption figures are still some 5 per cent below those of the predecessor engine: one contributing factor here is the further developed 8-speed Steptronic transmission. What is more, a particulate filter optimises the emissions response of the new engine, enabling it to meet the Euro 6d-TEMP exhaust standard.

Not only is the body lighter and more rigid in design than that of the predecessor model, the same is also true of the front and rear axle in the new BMW 3 Series Sedan. The result is a specific orientation of the axle kinematics and elastokinematics towards supreme yet sporty drive properties. The key feature in terms of suspension development in the new BMW 3 Series Sedan is its innovative damping system. The first ever lift-related dampers ever to be fitted in a BMW model function continuously and progressively in relation to the respective spring travel. As such, the vibrations that occur when compensating for bumps on the road and during dynamic cornering can be neutralised especially gently and precisely – the perfect basis for striking a unique balance between sporty flair and ride comfort, which is very much a defining characteristic of the new BMW 3 Series Sedan.

Long known for its diversity, the track layout of the Nürburgring Nordschleife quickly transpired as the perfect setting for selective refinement of the interaction between the new damping technology and the other suspension components. "We're using the lift-related dampers as an active set-up element so as to create supreme driving properties in all conditions," explains Peter Langen, Head of Driving Dynamics. "With short spring travel, a sensitive damping response ensures comfortable vibration compensation. When the car passes over large bumps, the body movements are controlled by increased damping forces."

The lift-related dampers are a standard feature of the suspension technology in the new BMW 3 Series Sedan. In a specific set-up they also form part of the M sports suspension, which additionally includes a lowering of 10 millimetres, 18-inch light alloy wheels and mixed tyres. This provides a boost to driving dynamics – something that can be experienced more intensely than ever before. The increased damping forces can be felt on the Nordschleife in particular: in the M sports suspension these are some 20 per cent higher than in the standard suspension. "This means the difference from the standard suspension is much more perceptible than before," says Peter Langen. "We've also made the M sports suspension much sportier, with more rigid bearings and stabilisers, harder springs and additional body struts."

In order to further reinforce the car's dynamic characteristics, the new M sports suspension is offered solely in combination with the Variable Sports Steering. In addition to the speed-related steering assistance Servotronic, this also provides a variable steering ratio. Variable Sports Steering has also been specially reconfigured for the new BMW 3 Series Sedan. It already responds with much greater precision to slight steering movements, without seeming nervous in central position. The harmonious set-up of the steering system can be felt on long bends as well as when changing direction several times in rapid succession. A linear build-up of steering forces and optimised feedback increase precision when cornering in dynamic style.

The M sports differential is able to perfectly demonstrate its qualities on both the Nordschleife and the Grand Prix circuit. The electronically controlled locking function in the rear axle differential of the new BMW 3 Series Sedan is linked to Dynamic Stability Control DSC, ensuring needs-oriented limitation of rotation speed compensation between the rear wheels on the inside and on the outside of the bend. Depending on the situation on the road therefore, it is possible to pre-emptively influence both understeering and oversteering without brake intervention. The active differential lock distributes drive torque selectively between the rear wheels. In this way, it prevents slip on a wheel with reduced surface grip while ensuring that the engine power can be used unrestrictedly to generate sporty driving pleasure. "Unlike conventional mechanical locks, the regulated M sports differential can optimise so much more than just traction," says Peter Langen. "In addition to cornering dynamics, there is a particularly tangible increase in drive stability in the event of load changes, for example. This allows the new BMW 3 Series Sedan to be driven remarkably confidently and effortlessly even when travelling in dynamic style." For sporty driving, the active differential lock provides much higher levels of transverse acceleration as well as a perceptible boost in dynamic performance when accelerating out of bends. It also supports optimised stability, precision and cornering predictability in the new BMW 3 Series Sedan – without brake intervention.

BMW 3 Series G20 Preproduction Testing




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      08-15-2018, 06:01 PM   #2
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      08-15-2018, 06:20 PM   #3
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      08-15-2018, 06:30 PM   #4
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when can we start ordering the g20 from our dealers?
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      08-15-2018, 06:32 PM   #5
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Damn! Can't wait to see it already!
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      08-15-2018, 06:33 PM   #6
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Does the lowering of the car mean I can still pull into driveways without scraping the bumper or parking spaces with concrete beams on the end? Or dips at speed. If it is much lower we will need a system to raise the front bumper like a Lamborghini. Maybe the ability to adjust the ride height dynamically. This should be independent of whether the car is in sport or comfort.
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      08-15-2018, 06:54 PM   #7
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I have a feeling the G20 will be awesome. Has it been confirmed that MT will NOT be offered in the 340i?
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      08-15-2018, 07:18 PM   #8
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Things looking up for the G20!

Seems to be good news all over.
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      08-15-2018, 07:27 PM   #9
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Quote:
Originally Posted by GMe90 View Post
I have a feeling the G20 will be awesome. Has it been confirmed that MT will NOT be offered in the 340i?
Afraid so, nor in 330i, MT only available up to 320i
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      08-15-2018, 09:29 PM   #10
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Looks great!

Not a fan of the current styling this looks great so far almost like a 'lil 5er.......
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      08-15-2018, 10:09 PM   #11
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Curious to see the final result. Will probably be more of an evolution than a revolution design.

The active cruise control sensor in the middle of the lower front fascia is ungainly.

They continue to grow in size every generation, when does it stop?
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      08-16-2018, 02:29 AM   #12
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Quote:
Originally Posted by GMe90 View Post
I have a feeling the G20 will be awesome. Has it been confirmed that MT will NOT be offered in the 340i?
You (USA) get a M340i RWD at least. Europe will get xDrive only.
I drive a F30 340i RWD at the moment and don't really see why not to choose a 390hp C43 AMG when I'm forced to take xDrive anyway. :/
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      08-16-2018, 02:42 AM   #13
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Quote:
Originally Posted by bimmer456 View Post
Does the lowering of the car mean I can still pull into driveways without scraping the bumper or parking spaces with concrete beams on the end? Or dips at speed. If it is much lower we will need a system to raise the front bumper like a Lamborghini. Maybe the ability to adjust the ride height dynamically. This should be independent of whether the car is in sport or comfort.
They just said the car's centre of gravity is going to be lower, I doubt the car will be lower.
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      08-16-2018, 05:44 AM   #14
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Looks promising. Interested in launch.
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      08-16-2018, 08:18 AM   #15
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      08-16-2018, 10:19 AM   #16
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Looking good, getting closer..
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      08-16-2018, 10:40 AM   #17
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      08-16-2018, 11:03 AM   #18
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Quote:
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Afraid so, nor in 330i, MT only available up to 320i
He's in US, you're in UK so offerings will likely be different.
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      08-16-2018, 11:27 AM   #19
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Very excited
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      08-16-2018, 06:48 PM   #20
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Originally Posted by Cortexiphan View Post
He's in US, you're in UK so offerings will likely be different.
All the rumors are saying that BMW will not make a manual 330 or 340 for any market. The U.S. will not get any manuals at all.
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      08-16-2018, 06:54 PM   #21
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Quote:
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He's in US, you're in UK so offerings will likely be different.
Maybe, but I’m not sure why manual would be available over there if it’s not here in the UK as the US favours auto far more than UK drivers (I believe)
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      08-16-2018, 11:18 PM   #22
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You know....

The E90 330i had...255 BHP...and was smaller than a barge. And that was more than 10 years ago. Really got to hand it to the new engineers.

This is progress? I guess I will send them a cookie of congratulations.

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