Ryanc

When Im carrying camping gear or am weighted down for any other reason, I develop a steering wheel vibration at exactly 55mph. When I have no cargo, it is as smooth as glass. Any ideas? Only thing I can think of is change in contact pattern with tires, or maybe an alteration in the balance when weighted down.

k0260

I have a light steering wheel vibration as well at exactly 46 mph. I already fixed DW with adj track bar, LCA's etc. I dunno??

Merlin4979

Generally, speed-specific vibrations and/or shakes are a tire balance issue. When is the last time you rotated or balanced your tires?

k0260

That's what I kinda figured. I'm rotating my tires today. Thanks!

Freewill

At 55 your tires are turning about 550 RPM and the drive shafts are turning a little less than the engine RPM. Should not be too hard to figure out what's vibrating. Could be with a load on you get a drive shaft angle that will vibrate. Tires should act the same way loaded or unloaded, but "should" never means "will for sure"

Ryanc

I run without a front driveshaft. It feels like a buZzing feeling in the steering wheel. Nothing shakes.

wayoflife

what do you have your rear drive shaft angle set to? could be it's off but not enough to notice at a normal ride height but weighed down, it changes enough to start vibrating.

k0260

Rotated my tires today, all good nowthanks again

Ryanc

Dead set zero, with maybe 0.2-.3 degrees with the pinion down. I really cant get my pinion down any further, my rear uppers are as short as they can go. Should I maybe add like 1/2 inch spacer front and rear to get the pinion down a little bit more? Or go with a progressive coil?

wayoflife

have you run your jeep with front shaft only to make sure the vibrations are coming from the rear shaft? if not, i would start there before spending any money.