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View Full Version : Test Drove a 550i Sport auto with Paddle Shifters


Richard in NC
07-13-2007, 02:05 PM
I had to check out the '08 5 Series with the new sport auto and paddle shifters. Short summary is I loved the new transmission.

In many ways I still miss my '02 M5. I wanted to look at the restyled 550i. Plus I'm tiring of the 6 speed manual in ever increasing Charlotte traffic. For those that have been asleep for months, the 550i now can have the new sport auto with paddle shifters. Its the same option announced for the '08 650i. It's supposedly a much updated tranny (new clutch pack and control mechanism) with much improved shift response. In sport mode or manual mode (like the old steptronic) plus pressing the sport button (like the 6er button but new in the 550i) results in very fast crisp shifts by either the screwy looking new lever or the paddles. There's not a harsh SNAP like S6 on the SMG but an near instant change in gear with an immediate surge of power. I didn't notice a throttle blip in down shifts in the few times I was able to try that. It didn't really need a blip as the RPMs quicky jumped up to the proper RPM and the car accelerated briskly.

The new sport automatic will suite the '08 650i very well.

I did like the restyled interior of the '08 550i (even though its less sporty than the 650i), the 20 way power seats, the ride of the non-runflat tires, and the extra room and entry/exit ease being a sedan. The performance semed equal to the 650i (but more deceptive) and easier to use (being an auto). The handling seemed equal but with a bit more isolation and the sedan like higher driving position. Downsides to the 550i are the lack of a temp guage and I think the warmup indicator in the tach is missing.

Overall I was very impressed and would consider trading soon except for the rediculously low appraisal of the 650i I got. The car has lost $20k in 14 months compaired to new!!!

PS: I test drove a Merc E550 also just for grins. The 550i rocks compared to it. The new tranny is FAR superior to the Merc 6 speed auto. Plus the 550i wins big in the handling feel.

mjames
07-14-2007, 03:37 PM
The 550i Sport is really sharp with the M-style bumpers and new rims. Still, I'd keep the 6er, it's more unique. :)

Gran Turismo
07-16-2007, 05:34 AM
No throttle blips? They replace the SMG with a paddle shifter controlled tranny featuring no throttle blips anymore? :cry: :ball:
Thanks for sharing anyway.

Gman
07-17-2007, 06:50 PM
I'll buy that for a dollar :100: , well 1 hundred. :grin:

Spyder
07-17-2007, 07:06 PM
...I didn't notice a throttle blip in down shifts in the few times I was able to try that. It didn't really need a blip as the RPMs quicky jumped up to the proper RPM and the car accelerated briskly...



From my experience with my ED 535, I agree with Richard's observation, and note that a throttle blip is what one would expect from a clutch-controlled manual trans. I suspect that "rev matching", a definite feature of the new trans, is accomplished smoother since there is no explicit sequence of clutch in, blip throttle, clutch out. Just a guess on my part...

Spyder

530xit
08-26-2007, 11:21 AM
...I didn't notice a throttle blip in down shifts in the few times I was able to try that. It didn't really need a blip as the RPMs quicky jumped up to the proper RPM and the car accelerated briskly...



From my experience with my ED 535, I agree with Richard's observation, and note that a throttle blip is what one would expect from a clutch-controlled manual trans. I suspect that "rev matching", a definite feature of the new trans, is accomplished smoother since there is no explicit sequence of clutch in, blip throttle, clutch out. Just a guess on my part...

Spyder
With the sport auto it still has a torque converter so the rev matching would not be needed as it is on the SMG or the new Dual Clutch box whatever the acronym is for it.

Spyder
08-29-2007, 04:58 PM
With the sport auto it still has a torque converter so the rev matching would not be needed as it is on the SMG or the new Dual Clutch box whatever the acronym is for it.

Agree that rev matching is not needed in the sense of a manual or SMG, but after comparing the new sport trans with the '07 650 auto over the same terrain, I'd say that the new trans does blip the throttle on down shifts. While both trannies evince a quick increase in engine speed on down shifting, the new trans accomplishes this w/o engine drag, ie, on level ground, the new trans maintains ground speed, while the older trans looses ground speed due to engine drag. Hence, it seems that the engine management s/w is providing some throttle (ie, the "blip") on down shifting to avoid engine drag.

Anyway, that's my initial impression of what's going on...

Spyder