your tires are probabaly just out of balance. have your aligment checked too. i dunno if air pressure would have anything to do with it, but the pressure specs are listed on the inside of the drivers door jam.

edit: i didn't read that part about the loose part, i can't tell what that would be, so many possiblities. just wait for one of the gurus, they can "sense" exactly what the problem is.

oh, and the vibration you feel when braking from high speeds is going to be warped or grooved rotors (i'm getting that fixed on my car tomorow morning). Its only $5 a disc at orielly's if you take them off yourself, or $50 a pair if you want Midas to do it for you. Very common especially if your lug nuts arn't tight at 65 ft/lbs (check that too), or if you ride the brake more than you should, and then go get a car wash or some how rapidly cool them from a hot state.....


Silver 1998 Mystique LS (v6)...ATX frown
Removed Emblems, limo tint, painted calipers.
Premier P630 HU with 4 Pioneer TS-A6895 Speakers with 10' Sony sub (yeah i know, i'm cheap)
Commando 501-S Alarm