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2020 Wrangler Rubicon: Death Wobble after lift kit and bigger tires

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Mike T. · rep 0 · May 25, 2:22 AM · 1 replies · solved · Question

Vehicle: 2020 Jeep Wrangler Rubicon

Hey Jeepers,

I recently installed a 2.5-inch lift kit and 35-inch tires on my 2020 Jeep Wrangler Rubicon (JL). Everything seemed fine for a bit, but now I'm experiencing the dreaded 'death wobble' when I hit bumps on the highway, usually between 45-60 MPH.

The steering wheel shakes violently, and it feels like the front end is going to fall apart until I slow down significantly. It's really scary and makes me nervous to drive at speed. I've checked the torque on the control arms and track bar, but I'm not sure what else to look for. Any ideas on what components might be failing or need adjustment after the lift?

Thanks for the help!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 2:22 AM

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ClearTheCode admin answer: Experiencing 'death wobble' on your 2020 Jeep Wrangler Rubicon after a lift kit and larger tires is a common, yet serious, issue that needs immediate attention. It's a violent oscillation of the front axle, and while it feels like the whole vehicle is falling apart, it's typically caused by worn or improperly adjusted steering and suspension components.

Here are the primary causes and what to check:

  1. Improper Alignment: After a lift, your caster angle changes. Too little positive caster can make the steering unstable. A proper alignment, often requiring adjustable control arms or cam bolts, is crucial.
  2. Worn or Loose Track Bar: The track bar centers your axle. If the bushings are worn or the bolts are loose (especially at the frame or axle mounts), it can allow the axle to shift side-to-side, initiating the wobble.
  3. Worn Ball Joints: Worn upper or lower ball joints in the steering knuckles can introduce play, leading to instability.
  4. Damaged or Worn Tie Rod Ends/Drag Link Ends: Any play in these steering components can contribute to the wobble.
  5. Worn Steering Stabilizer: While a steering stabilizer doesn't cause death wobble, a worn one can mask underlying issues. If it's worn, it won't dampen the oscillations once they start.
  6. Tire Balance/Runout: Unbalanced or out-of-round tires can initiate vibrations that can escalate into death wobble if other components are compromised.

When to see a shop: Given the complexity of diagnosing and correcting death wobble, especially after aftermarket modifications, it's highly recommended to take your Jeep to a reputable off-road or suspension specialist. They have the expertise and tools to thoroughly inspect all front-end components, measure caster angle, and perform a precise alignment. Continuing to drive with death wobble is not only dangerous but can also accelerate wear on other critical steering and suspension parts.

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