Quote:
Originally Posted by M.barnes
Not sure on that model.
There are at least 5 torque variations of the 'same' ZF 8 Speed though.
8HP30 - 300 Nm
8HP45 - 450 Nm - (M135i and I'm guessing 235)
8HP55 - 550 Nm
8HP70 - 700 Nm - (7 Series)
8HP90 - 900 Nm - (Rolls Royce)
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You're probably right given that there's not much reason for them to switch to a different model from the 135 to the 235. But I still wonder how much cushion is factored into those torque ratings. Obviously, I don't want to find out by trial and error on my own car, but I have a hard time believing they'd use a transmission that is truly pushed to the brink of its capabilities by the car in stock form.