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#1
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F01 7-series with 8-speed transmission
This past year Lexus toted they had the worlds first 8 speed auto. This was an interesting development as BMW did not even have a 7 speed. The 8 speed Lexus offering is only available in the land yacht sized LS because it too (like the LS) is a bit too large for other models in the brand’s line up. With the introduction of the next generation 7 series BMW will launch its first 8 speed gearbox. In order to keep up with the Jones’ BMW has had to think a bit outside the box. Our sources indicate that the transmission BMW will utilize takes up the same amount of space as the current 6 speeds and will not use additional components. This has been made possible by a completely new transmission concept. We have learned that it utilizes four planetary gear sets and five transmission clutches. Two transmission clutches are unlocked per gear, thus resulting in greater efficiency and a higher overall transmission ratio. It is touted as being smoother and will reduce fuel consumption by almost six percent; way to go Efficient Dynamics! Since it is the same size as the current 6 speeds, a larger hump or other invasions into the passenger cabin space is not necessary. The gear selector will also return to the console from its previous stalk location; a well welcomed change for many. BMW had explored other options but testing indicated that an 8 speed is the most efficient form of transmission because of the optimal use of gear ratios, weight and size. 9 and 10 speeds boxes actually showed a decrease in efficiency and additional size constraints. This transmission is modular in design so it can be used in various applications. This will make it available for use in Hybrids and X-Drive vehicles, which the 7 Series will feature. This transmission should be available in all varieties that BMW will offer the 7 series in, allowing BMW to reduce costs associated with different drive-train combinations. This transmission will make its debut in the F01 7 series to be followed later by the F10 5er. |
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#2
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Hopefully, BMW can make it work. Lexus couldn't make their 8-speed work in the LS, and it doesn't really suit the performance nature of the IS-F. And BMW can't make their GM 6AT work reliably in the E83. And driving the "base" automatic in the 325i/328i feels like taking a step back in terms of responsiveness compared to the outgoing 5AT.
How about a fancy, high-tech new manual gearbox, BMW? |
#3
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You'll see the M DCT (the double-clutch tranmission) for the M3 coming out in the next month or so in the M3 coupe/convertible/sedan (in that order). The M DCT will be your high-tech new manual gearbox...
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#4
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#5
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Lets hope they addressed reliability in this slushbox and that it doesn't search for gears all the time.
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#6
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at this rate of "keeping up with the Joneses", I guess it's only a matter of time before we'll see 1000hp 15 speed cars in our driveways. Imagine the entry level 1-series having only 500hp.
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#7
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mmmm....overdrive-happy...
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#8
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#9
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I'd rather have a 6sp auto then an 8sp...this is getting ridiculous ....
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#10
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