Going to be doing front and rears on my 2017. It's about to hit 100K. Should I be thinking about replacing the front wheel bearings (4WD) while I'm in there, or go with the "if it ain't broke" ideology?

 

If it ain't broke....

My F150 is at 162,000, my Tacoma is at 255,000. Both have the factory wheel bearings.

 

unless you want to spend $300 or so no need

 

Yup. Ford has deemed that you can't just replace the bearings. You must replace the complete front hub with the bearings, the IWE gear and wheel speed sensor.

Gonna cost you $200/side for aftermarket or $450/side for OEM. If it ain't broke, don't fix it.

 

This.