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[kelikran]

I get a nasty grinding noise, will start when going over a rough spot, most likely at speeds under 60 km/hr, although I have had it at 90km crossing onto a bridge that was rough. Lasts anywhere from 1-2 secs. to 5-8 secs., just quits on it's own. If it is at low speeds, slowing to almost a stop makes it quit. I have pulled and checked both hubs, they are working properly and released as they should be. I have jacked up both front wheels, they spin freely, with a slight amount of pull, just as they should. There is no side to side play. I can't feel anything wrong there, and can't see anything either. When the grinding happens, there is a definite braking force happening. I guess the next step is wheel bearing replacement, but I didn't know wheel bearings could start out intermittent like this, I thought when they go, they just go. Any ideas from anyone? This is really bothersome, and I would also be concerned about driving it, except that, like I said, they feel tight and turn fine when jacked up. There is something triggered by just the right kind of impact going over a rough spot.