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The steptronic tranny in the 08-10 135i is a French made 6-spd as opposed to the ZF 6-spd in the 3 series and it's a bad transmission. 2011+ model year 135i's have the 7-spd DCT, which IMO is miles better.
As much as I like the DCT, the reason I bought 135i is to have fun and the 6-spd manual makes it that much more fun, so I bought a manual.
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BSM 135i - CDV Delete | Bilstein | Eibach | M3 FSB | Whiteline
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