Originally Posted by skyguy
I measured the same way, my best guess was 675 and my shop measured 673. Don't tell them but I actually ordered 674mm to split the difference and was worried that was contributing to the wobble. I'll be really glad if it doesn't have to go back to the driveshaft shop. So yeah, we're 3mm off and it's not rocket science but seems like a pretty decent independent measurement result.
I measured on the car, from the center of the bolt to the gearbox flange guybo, remember the 335i shaft is flexible in length between the gearbox and the bearing