Quote:
Originally Posted by jeandp
Joined this forum today - thanks.
I have owned my 1M Coupe for about 4 years now and still find the rear end "squirmy". The steering is razor sharp (love it) and back end is planted once you've dialled into the corner. The back end just feels like it wanders under normal driving conditions - like the springs are too soft or something. The suspension is stock with 45K Km on the odo. The rear shocks were replaced under motorplan about 10 000 km ago. I've had BMW check all the linkages and the like as well as having the wheel alignment done more than once. Also played round with tyre pressures which did not solve the "problem".
This is not to be confused with traction control switched off and in "drift" mode - different chapter of the book.
Anybody experienced similar feel?
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I'd say this is why the F8x cars have solid mounted rear subframes. I've read that swapping to solid rear subframe bushings doesn't increase NVH, but mine are still in the box so I can't comment personally. Having owned a 2012 135i and an F80 M3 before the 1M, I believe that the 1M and 135i both have a rear-end shimmy under hard throttle where the F80 M3 doesn't. The other possibility is the rear diff, the 135i is open and the GKN unit in the 1M does slip one wheel a bit before locking. I'm pretty sure the F8x cars don't have the same initial slip of the GKN.