Hey folks, I recently had a local, reputable shop re-gear my 2012 JKU for me (3.21 to 3.73...I know, I know). The owner said that the gears set up really nicely (I did get all Spicer parts, which probably helped). In addition to the front and rear R&Ps, the front carrier was replaced, the front u-joints, all front axle bearings (the front unit bearing assemblies were fine), and all rear axle and wheel bearings as well.

I've got 255/75R17 (31.5") Goodyear Wrangler Duratracs with about 5,500 miles. Maybe it's just in my head, because the tires always hummed to a degree, but it seems louder than before, but that doesn't really make sense. It's most audible at speeds above 30 MPH. I'm trying to determine if there's any drivetrain noise in that hum or not. Below is a recording during my commute, driving about 50-55 MPH, about 15° and with tire pressure at about 33 PSI cold. I've seen how knowledgeable you are, so I thought I'd get an opinion before considering reaching out to the shop owner (he's a good guy). As always, thanks for your insights.

Recording