Okay, a little background (Short), I bought a e28 525Td without engine for 50***8364;. It came with trailering arms for drum brakes so I bought from a local junkyard new trailering arms for disc brakes for 525i. Then i ordered wheel bearings from autodoc for a 525i e28 but they don't fit somehow? they are in diameter 80mm. So i checked up that all e28 from 520 to 535i have the same wheel bearing. so my question is am i missing a part or something? is there supposed to be something in the trailering arm that i don't have? or do i have the wrong wheel bearing somehow? do you guys have any suggestions?