Ball Joint Question

[Voldog]

What are the possible signs if ball joint need to be replaced. 04 XC70 167k. Nothing too obvious. No thunks or sound from wheels. Just wondering due to mileage.

[Astro14]

If the boot is intact, and the joint is tight, you?re good.

To check - jack up the car, make sure it?s secure, and grab the wheel at the 12 and 6 o?clock position and give it a good yank. It should be tight. No movement. Put a pry bar between the bottom of the knuckle and the lower control arm. Same thing, no movement.

If there is movement, or the boot is damaged, you?re done, get a new ball joint.

I do them in pairs.