The front wheel bearing isn't something most people think about until it's time to replace them. They generally work seamlessly... Until they don't. If you've noticed a groaning from one or both of the front wheels on your F87 M2, F80 M3, or F82 M4, especially when turning, it's likely a bearing(s).
The easiest way to verify if it's your wheel bearings is to jack the front of the car, put a hand on top and on the bottom of the wheel in question, and try to see if the wheel has any play. If it does, it's best to change the wheel bearings before they become more than just an annoying sound and leave you stranded on the road.Note:
BMW calls for 4 new mounting screws with any new wheel bearing/hub - BMW part #31206872920. However, beginning around 2017 BMW changed the thread pitch on the mounting screws from M12x1.5 to M12x1.25. If you only have the M12x1.5 screws you will need to purchase four new screws per hub.
This is a Genuine BMW F8X wheel bearing with a two year warranty. Buying a Genuine part will usually be more expensive than an OEM or aftermarket brand but you are assured that it meets BMW's designs for fitment, performance, and longevity. It will also be the very latest design, incorporating any updates or revisions that an aftermarket brand typically will ignore.
F87 (2016-2021) > M2 Competition S55 (2019+)
F87 (2016-2021) > M2 N55 (2016-2018)
F80 (2015-2018) > M3 (2015-2018)
F82 / F83 (2015-2020) > M4 (2015-2020)
F82 / F83 (2015-2020) > M4 GT4
F82 / F83 (2015-2020) > M4 GTS