If it is a misfire caused by coils then the check engine light would be on, and flashing during the active misfire. If it is the front suspension you should also feel it at other times, possibly under braking as well. I've even seen this problem from a broken motor mount. Basically, need someone experienced to diagnose as it could be one of many things and you don't want to guess by throwing parts at it... that costs more than proper diagnosis most of the time.

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X5 pics

RIP 4.6is.....

2003 4.6is