The other day, I was riding my brothers BMW, straight road, just me, sunny day, just started out. A terrible whining noise started from the front, intermittent. brakes good, tires good, front end, good, all bolts, tight, pads good, no shimmy, no play in wheel. I stopped, when the light changed green, I started a left turn, the noise returned and the bike WOULD NOT TURN, it was everything I could do to wrench the bars and get it to turn, the gyroscopic effect of the turning front wheel seemed to stop and it was as if I was trying to fight the wheel that seemed to want to go right instead of left. I went home. Again, everything was in order. I'm thinking bearings as I can't find anything amiss on the whole front end, the God awful noise coming from the front wheel is my only clue. I have to go through his files to see when the bearings were replaced if ever, its a 1980. Any ideas?