We found these instructions online and posted them here hoping they will help. We are not the author of these instructions and we do not claim that these will be exact to your vehicle; however, they should give you a very good idea if you think you want to tackle this job yourself or not. Description: The front hub/bearing assembly on an NA model Miata is a one-piece unit consisting of the hub/lugs with the bearings pre-installed and greased. The assembly is typically considered non-serviceable, and you replace the unit when the bearings fail.Symptoms: In my case, my 1990 Miata...