They are really easy to replace yourself. We ordered the parts and changed the bearings, brake pad, calipers. We also had to replace the rotor on one wheel. Don’t let them go. Ours had less than 50k miles when one went in. Feb. Thankfully a motorist warned us and we were able to get onto a frontage road and we were traveling at a low speed when it failed. It ruined everything-tire,rim, brake pad, calipers, warped the rotor, and of course the bearing assembly was gone. We have Moryde IS and once that happens, the suspension is on the ground. Roadside service was able too strap up the suspension and we limped to a parking lot where we sopend the next 8 days awaiting parts. No one carries them. The failure occurred on a Friday afternoon so we had to wait for Monday to order the necessary parts. Once we were repaired and made it to our destination, we changed out the other three bearing assemblies. We were lucky. We could have had a fire or ripped up our living room slide if we had been going interstate speed.