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In Reply to: Advantage of Step/Tiptronic posted by Xzibit on September 25, 1999 at 10:46:35:
The Tiptronic of Porsche is a plain automatic with the possibility of selecting gears through the buttons on the wheel. But it's still an automatic with torque converter.
BMW's SMG is basically the regular 6-gear manual box, with a clutch operated through computer controlled hydraulics etc.
Two totally different things.
Look under this link for a good description of it:
http://www.bubbaclub.com/rob/SMG/smgRT.htm