I have 86K on my 99 and no problems with wheel bearings! The 25 PSI easily cause the problem. At that pressure, the tread buckles causing minor vibration which equates to noise. Also, most tires have a break in period.
Just for insurance purposes, I would call Tire Rack and place a claim on them so that if it returns Tire Rack doesn't say you should have called us a month ago!
-Andy