Very bazaar. I've had mine off several times and it slides right back on with out any problems. Hopefully they sent you the correct bumper....

Your PM is turned off.

 

I don't have the rep but this is the first time i've heard of fitment issues on the rear bumper.

 

balbs you have a pm...

 

Let us know after you remove your battery cover on the bottom right side. It's the large back panel held on with plastic nuts. Once bumper is on you will need to trim this panel on the right side and rear area. I'm guessing this is what is pushing out the bumper over and not allowing it to align correctly.

 

Ended up spending another 1200$ for a BMW bumper cover. I learned something from this though...

 

Same thing here. Went with the fake stuff then decided to go OEM. Better to stick with the OEM stuff anyways if you can.

 

Did you go back with the OEM like you had or did you take the OEM MTech?

 

Went back with an OEM one.

 

Curious if you ever removed your lower battery cover and tried to re-install the aftermarket bumper. I know for sure that this panel has tobe trimmed or even replaced. I trimmed mine and can't imagine how the bumper would fit with the interfenence.

 

I vaguely remember that there is an actual MTech battery cover.