I noticed a pulsing after braking and measured almost .010" of run-out when measured at the outside edge of the rotor.

I cleaned off all the rust and high spots on the hub itself and the rotors are brand new.

I did replaced this axle last year (and have probably had the problem ever since...hard to say exactly when it started, it was awhile ago, including on the last set of rotors...I had just figured it was time for new ones at 100k).

Is it possible that to adjust the run-out on the 4matic hub with the axle bolt? Did I over/under tighten it?

On the 4matic axle, it has a bolt that threads into the hub (a 27mm big guy) a little different than I'm used to on a mercedes axle.

I saw in doing a little research that some folks make a run-out correction plate is that really what I need?

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Daily Driver: 02 E430 4MATIC
In the family: '03 E500 // '04 ML500 // 64 220SE