Quote:
Originally Posted by Tom K.
I'm almost positive that the quoted 3.46 differential ratio for the 135i DCT is an error. If that were the case, the car would be turning something like 2,800 rpm @ 60 mph which is higher than than my 128i 6 speed MT in 5th!. IIRC, some DCT owners have reported rpm @ 60 as closer to 2,000 rpm which would mean a FD ratio of about 2.6, given the direct drive 7th gear. Lee123, what is your rpm in 7th at 60 mph?
Tom
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I'd love to answer that question, Tom, but I don't remember exactly and car is still in the shop while they try to get the new radio working. If I get it back later today I'll check and let you know. I will say it's much closer to 2,000 than 2800.