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Should I change it now or wait till it fails?

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2008 Envoy SWB 4.2
8 Posts
Discussion Starter · #1 ·
I recently acquired a pair of Timken front wheel bearings. The price was right, but I only needed one.
Now I have the other side apart. The back side of the knuckle is quite crusty and the rust is creeping in towards the bearing. Is it time to change it while it's apart, or should I just make sure the bolts turn and reassemble until the bearing actually fails?

09 envoy 4.2 130k, not sure if it's been changed before.

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