One thing that caused a wobble in my vehicle was a a dodgy front CV joint. I replaced both and it went away. Unless you've owned the vehicle from new they may have let the boots split in the past. If you have the money and the time you can buy just the CV joint from ECS - You'll have to search the part number and it's a little hard to find the number but if you chat to them I think a genuine BMW CV joint is about $200 or you can get a Meyle one for about $150 on ebay if memory serves. Generally if one is gone the other is gone as well.

Not saying its your issue but that was my issue.

Google "E53 CV Joint" and that'll point you to the writeup on Xoutpost

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2004 E53 4.4L N62