New Steptronic - what is actually improved?
11-09-2006, 11:01 AM
#21
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My Ride: 335i Sedan
I have a 335i sedan, but this is my 1st BMW so I can't compare with previous transmissions but I have to say this transmission is very smooth too smooth that I sometimes forget how fast I'm going. Only times i get a jerk in the car is when I switch the to steptronic and almost slamming my foot on gas pedal(this is the intended purpose anyway). lol
11-09-2006, 11:26 AM
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I test drove a 335i a few weeks ago, I must say I was quite impressed with the new tranny. Gear shifts happen instantly and when you downshift, it matches your revs,,, sweet.
11-09-2006, 02:19 PM
#23
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Originally Posted by Wiu-Bimmer' post='354246' date='Nov 9 2006, 09:26 PM
I test drove a 335i a few weeks ago, I must say I was quite impressed with the new tranny. Gear shifts happen instantly and when you downshift, it matches your revs,,, sweet.
11-10-2006, 04:41 PM
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My Ride: 520d SE Manual, Sports Suspension, Sports Steering Wheel, Dakota Leather.
The transmission in the new 335i is the all new 6L50 Manufactured & Designed by GM Strasbourg France.
This transmission is totally specific to BMW but is based on the same 6L80 as used in the Z06 Corvette & similar.
I have been fortunate enough to have ridden in a development E90 3.0 (petrol) with this transmission & there is a huge difference between this new 6L50 & the ZF product
and even compared the very similar GM 6L65/70/80 used in the US.
The transmission is tuned for ultra quick shifts and is able to deliver this due to the new clutch to clutch mechanical configuration - do not be confused - this is not a DSG - it is still a conventional Auto box with Torque Converter.
Apparently - the GM US product will not have decreased snappy shift times as there is no public desire - based on customer feedback profiles
Anyway - here's some product blurb - PS soon to be released 6L45 will be fitted to 2.0 & 2.5 Petrol & 2.0 Diesel motors.
The 6L50 (and similar 6L45) is a 6-speed longitudinally-mounted automatic transmission produced by General Motors. It is very similar in design to the larger 6L80/6L90, and will be produced at the GM Powertrain plant in Strasbourg, France.
The 6L50 is adaptable to rear-wheel drive and all-wheel drive applications. It can accommodate engines with up to 332 ft?lbf (450 N?m) of torque, and vehicles with a GVWR of 5,000 lbs (2,268 kg).
Gear ratios:
1 2 3 4 5 6 R
4.06 2.37 1.55 1.16 0.85 0.67 3.20
Applications:
2007- Cadillac SRX
2007- Cadillac STS
2007 BMW X3 3.0
2007 BMW X5 3.0
2007 BMW 335
2007 BMW 330
2007 BMW 328
Other BMW Petrol & Diesel Models to follow.
This transmission is totally specific to BMW but is based on the same 6L80 as used in the Z06 Corvette & similar.
I have been fortunate enough to have ridden in a development E90 3.0 (petrol) with this transmission & there is a huge difference between this new 6L50 & the ZF product
and even compared the very similar GM 6L65/70/80 used in the US.The transmission is tuned for ultra quick shifts and is able to deliver this due to the new clutch to clutch mechanical configuration - do not be confused - this is not a DSG - it is still a conventional Auto box with Torque Converter.
Apparently - the GM US product will not have decreased snappy shift times as there is no public desire - based on customer feedback profiles
Anyway - here's some product blurb - PS soon to be released 6L45 will be fitted to 2.0 & 2.5 Petrol & 2.0 Diesel motors.
The 6L50 (and similar 6L45) is a 6-speed longitudinally-mounted automatic transmission produced by General Motors. It is very similar in design to the larger 6L80/6L90, and will be produced at the GM Powertrain plant in Strasbourg, France.
The 6L50 is adaptable to rear-wheel drive and all-wheel drive applications. It can accommodate engines with up to 332 ft?lbf (450 N?m) of torque, and vehicles with a GVWR of 5,000 lbs (2,268 kg).
Gear ratios:
1 2 3 4 5 6 R
4.06 2.37 1.55 1.16 0.85 0.67 3.20
Applications:
2007- Cadillac SRX
2007- Cadillac STS
2007 BMW X3 3.0
2007 BMW X5 3.0
2007 BMW 335
2007 BMW 330
2007 BMW 328
Other BMW Petrol & Diesel Models to follow.
11-11-2006, 09:06 AM
#25
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For info regarding all GM 6L__ transmissions:
http://www.gm.com/automotive/gmpowertrain/...hydra/index.htm
http://www.gm.com/automotive/gmpowertrain/...hydra/index.htm
10-18-2007, 06:42 PM
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My Ride: 11 550i Sophisto Gray/Oyster Black/Anthracite, Sprt Trns, DHP, IAS, SP, PP1, PP2, CWP, HUD, DAP, AVSP, SF RS, CA, ACC - Euro Del
I am confused. Is the SAT built using the same core hardware as the non-SAT? Is the difference just the paddle shifters and enhanced software and controls on the SAT. Thanks.
10-20-2007, 05:34 AM
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Originally Posted by pharding' post='483349' date='Oct 19 2007, 04:42 AM
I am confused. Is the SAT built using the same core hardware as the non-SAT? Is the difference just the paddle shifters and enhanced software and controls on the SAT. Thanks.
10-20-2007, 06:02 AM
#29
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My Ride: 2008 BMW 550i
2006 BMW X3
Originally Posted by hector' post='354704' date='Nov 10 2006, 09:41 PM
The transmission in the new 335i is the all new 6L50 Manufactured & Designed by GM Strasbourg France.
This transmission is totally specific to BMW but is based on the same 6L80 as used in the Z06 Corvette & similar.
I have been fortunate enough to have ridden in a development E90 3.0 (petrol) with this transmission & there is a huge difference between this new 6L50 & the ZF product and even compared the very similar GM 6L65/70/80 used in the US.
The transmission is tuned for ultra quick shifts and is able to deliver this due to the new clutch to clutch mechanical configuration - do not be confused - this is not a DSG - it is still a conventional Auto box with Torque Converter.
Apparently - the GM US product will not have decreased snappy shift times as there is no public desire - based on customer feedback profiles
Anyway - here's some product blurb - PS soon to be released 6L45 will be fitted to 2.0 & 2.5 Petrol & 2.0 Diesel motors.
The 6L50 (and similar 6L45) is a 6-speed longitudinally-mounted automatic transmission produced by General Motors. It is very similar in design to the larger 6L80/6L90, and will be produced at the GM Powertrain plant in Strasbourg, France.
The 6L50 is adaptable to rear-wheel drive and all-wheel drive applications. It can accommodate engines with up to 332 ft?lbf (450 N?m) of torque, and vehicles with a GVWR of 5,000 lbs (2,268 kg).
Gear ratios:
1 2 3 4 5 6 R
4.06 2.37 1.55 1.16 0.85 0.67 3.20
Applications:
2007- Cadillac SRX
2007- Cadillac STS
2007 BMW X3 3.0
2007 BMW X5 3.0
2007 BMW 335
2007 BMW 330
2007 BMW 328
Other BMW Petrol & Diesel Models to follow.
This transmission is totally specific to BMW but is based on the same 6L80 as used in the Z06 Corvette & similar.
I have been fortunate enough to have ridden in a development E90 3.0 (petrol) with this transmission & there is a huge difference between this new 6L50 & the ZF product
and even compared the very similar GM 6L65/70/80 used in the US.The transmission is tuned for ultra quick shifts and is able to deliver this due to the new clutch to clutch mechanical configuration - do not be confused - this is not a DSG - it is still a conventional Auto box with Torque Converter.
Apparently - the GM US product will not have decreased snappy shift times as there is no public desire - based on customer feedback profiles
Anyway - here's some product blurb - PS soon to be released 6L45 will be fitted to 2.0 & 2.5 Petrol & 2.0 Diesel motors.
The 6L50 (and similar 6L45) is a 6-speed longitudinally-mounted automatic transmission produced by General Motors. It is very similar in design to the larger 6L80/6L90, and will be produced at the GM Powertrain plant in Strasbourg, France.
The 6L50 is adaptable to rear-wheel drive and all-wheel drive applications. It can accommodate engines with up to 332 ft?lbf (450 N?m) of torque, and vehicles with a GVWR of 5,000 lbs (2,268 kg).
Gear ratios:
1 2 3 4 5 6 R
4.06 2.37 1.55 1.16 0.85 0.67 3.20
Applications:
2007- Cadillac SRX
2007- Cadillac STS
2007 BMW X3 3.0
2007 BMW X5 3.0
2007 BMW 335
2007 BMW 330
2007 BMW 328
Other BMW Petrol & Diesel Models to follow.
10-20-2007, 05:09 PM
#30
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My Ride: (USA) 645Ci, Silver Gray, Chateau, Cold Weather PKG, Premium Sound PKG, Sport PKG, Step, NAV [Std Equip in 645], HUD, Satellite (SIRIUS) Radio, Aux Input, Bluetooth enabled using iPhone 3GS w/ adapter cradle - Build date - 01/05, Baby delivered 2/24/05
335i, 335xi and 535i get the ZF Six Speed Automatic Transmission GA6HP19Z, GA6HP19ZTU (3 series) or GA6HP26Z or GA6HP26ZTU (5 series). GM trannies are not offered on 5 series.
The smaller engined 3 series can have either the ZF or the GM6 - 6L46R Transmission.
That net of this is the conclusion that the ZF would be the SAT tranny in the 5 series and the 335s. I suppose the GM tranny MIGHT also be a SAP in the lesser 3s, although the ZF is also available to them.
The smaller engined 3 series can have either the ZF or the GM6 - 6L46R Transmission.
That net of this is the conclusion that the ZF would be the SAT tranny in the 5 series and the 335s. I suppose the GM tranny MIGHT also be a SAP in the lesser 3s, although the ZF is also available to them.
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