Compression Ignition Addict
Join Date: Jan 2009
Thanked 153 Times in 135 Posts
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Col, I have to agree with DAWG on the death wobble. My truck did it once bad and I fixed it. If your experiencing real shake-your-truck-like-crazy death wobble you need to get it fixed. It will tear your front end apart. Running higher air pressure is a temporary band aid. As for 35s versus 37s, sounds like your considering all the right aspects. As far as gearing, just google one of the gear ratio charts and find your sweet spot. If you tow often, you will need to re-gear to match.
To fix the death wobble do all ball joints, the trac bar ball joint, and the drag link. Run a steering stabilizer is required. About $500 in parts but those items need servicing every once in awhile, so that will fix it. If you can only replace one thing it's most likely the trac bar ball joint. Take a 4' pry bar, but it on top of axle but underneath trac bar over towards passenger side. Apply Ton of pressure upwards, watch the trac bar, if it lifts at all inside the ball joint connection - that is your death wobble, replace trac bar ball joint.
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