Audi and BMW to utilize 8-speed gearboxes to take on Lexus

[Wolfgang]

^^

Also, the Getrag 7DCI600 weighs 79 kg (dry).

GETRAG Corporate Group - 7DCI600 TRANSMISSION

[Just_me]

Originally Posted by Wolfgang

^^

Also, the Getrag 7DCI600 weighs 79 kg (dry).

GETRAG Corporate Group - 7DCI600 TRANSMISSION

and? is it a problem?

[Wolfgang]

^^

Looks like BMW might now prefer an 8-speed auto or 7-speed dual clutch transmission over the planned 6-speed.

MB's in house developed 7G-Tronic seems to have a slight weight advantage.

[Just_me]

Originally Posted by Wolfgang

^^

Looks like BMW might now prefer an 8-speed auto or 7-speed dual clutch transmission over the planned 6-speed.

MB's in house developed 7G-Tronic seems to have a slight weight advantage.

I dont think those differences are going to make a impact on the performance of the car.
BMW's new 8-speed automatic is better and more efficient than their 6-speed automatic thats why they are replacing their older gearboxes.

[Wolfgang]

^^^
Great.

PS. Mercedes is working on a new in-house developed transmission, with "at least 8 speeds".
It's expected around 2014, according to jesmb.de.

PSS. Didn't see this Car and Driver article yet posted on GCZ? Might have overlooked it somewhere...



ZF’s 8-Speed Automatic Transmission - Tech Dept.
Now if six turned out to be eight . . .
BY K.C. COLWELL
December 2009

The eight-speed transmission is not new to the automotive world. Toyota has had one in its Lexus LS and IS F sedans for a few years. But now, transmission giant ZF is bringing eight speeds to the masses with promises of improved fuel economy.

It’s known by the folks in its hometown of Friedrichshafen, Germany, as the “8HP kit,” and this transmission offers myriad options for automakers. It is already in the BMW 760Li and 5-series GT. The new Rolls-Royce Ghost, Bentley Mulsanne, and Audi A8 will all be equipped with the 8HP when they roll out of factories in the coming year.

More: http://www.caranddriver.com/features...sion-tech_dept

[bmer]

Originally Posted by Wolfgang

It seems GM Strasbourg has been supplying BMW transmissions since 1991?

As I understand for selected models only. For example the world's first 6-speed automatic (in passenger car) that debuted in the E65 7 Series in 2001 was made by ZF.

For the last few years BMW has mostly been using transmissions from ZF Friedrichshafen and Getrag.

[klier]

Originally Posted by bmer

As I understand for selected models only. For example the world's first 6-speed automatic (in passenger car) that debuted in the E65 7 Series in 2001 was made by ZF.

For the last few years BMW has mostly been using transmissions from ZF Friedrichshafen and Getrag.

Yes, selected models only. I really wonder what's going to happen with the X1 now..maybe the new 8 speed then??

Applications:

6L45

2007– BMW X3 – 3.0si / 2.5si / 3.0i
2007– BMW 3 series – 330(x)i / 328(x)i / 325(x)i / 323i / 320i / 318i / 316i
2007– BMW 1 series – 130i / 128i / 125i / 120i / 118i / 116i
2009– BMW X1 – 2.8i xDrive
6L50
2006– Cadillac STS-V
2007– Cadillac STS
2007– Cadillac SRX
2008– Cadillac CTS
2009– Holden VE Commodore / Holden VE Berlina / Holden VE Calais / Chevrolet Lumina
2009– Holden WM Statesman / Holden WM Caprice / Chevrolet Caprice / Daewoo Veritas

[See Ya]

Originally Posted by Osnabrueck

The number of gears in your luxo-barge has much more to do with marketing than it has to do with performance.

I agree as is the case with so many "gimmicks" they come out with.

Unfortunately, because consumers are what they are, not the sharpest tool in the shed, other car companies have to offer the same to keep up with silly consumer wants.

[ctsurewin]

Anyone know why bmw 7-series (except 760) doesn't get the 8 spped gearbox while the 5er does?

[klier]

It came too early is my guess. Next year model update should take car of that...