After replacing all 4 tires with ps4s, still had road noise. Turns out it was a wheel bearing, drivers rear. Can't say it was the funnest repair, but rewarding. A tip if anyone decides to do their own, you can weld the outer race out of the knuckle. Basically run a couple beads around the inside circumference of the race and tap it out. After that I pressed it back in with a 3/4" piece of all thread and some thick steel used as a washer to press the bearing from the outer race. Car is now whisper quiet 😎
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