i've had several experiences with these damned "new style, can't lubricate wheel bearings" front wheels that is", once on an e30, an E46 and a Golf. On the E30 i put it into the dealers and had bearings done on both front wheels. On the E46 i was driving when i heard the noise come on gradually, when i got home i shoved grease into the bearing, although its "sealed" after a short blast some grease clearly entered the bearing, it went for 50k and i sold the car! Pretty much the same with my old golf run around, bearings got noisy, i slapped some grease into them and they've been quiet for approx 10K. I know on the golf that there is no bearing cap, only the wheel stops the grease from coming out...........but it works 😬