If u have a worn hub and reuse it with the new bearings that could be your problem.. I replaced the whole hub assembly with new bearings and seals on both front.. 2 years now and no issues and I drive my car 140 miles a day round trip to work and back...
However I did once replace my front bearing with the same old hub and it was a bit worn at the end and lasted 8 months...
However I did once replace my front bearing with the same old hub and it was a bit worn at the end and lasted 8 months...