One problem related to front suspension wheel bearing has been reported for the 1998 Toyota 4Runner. The most recently reported issues are listed below.
The contact owns a 1998 Toyota 4runner. Whenever the contact parked the vehicle, he noticed oil dripping from the rear of the vehicle. The vehicle was taken to a local auto shop and the contact was informed that the rear wheel hub needed to be replaced. The current and failure mileages were 117,000.