Drivetrain noise at 50mph

[chevitz]

My raptor is making a weird moaning noise around 50+ mph. Nothing at 40, it sounds a lot like tire noise, but since it doesn’t start until 50 I and sure it isn’t the tires. I’m thinking some bearing is bad or the front diff

Sponsored

 

[JrHDRanger]

I had a similar sound at 56mph and thought it was a bad wheel bearing. Was the tread blocks on the KO3s wearing unevenly. I rotated every 5000 miles and had several alignments and still wore that way, new tires eliminated my noise. Also, if you have a rear lift look at the driveshaft angles, might need to shim above the carrier bearing. I had to do a 4mm shim with my 2.25/1” lift.

 

[Pic-N-Stick]

If you are running a lower tire pressure like 35, maybe fill them to 39 or 40 psi and see if it changes.

Sponsored