Symptoms
- Shaking appears around a specific speed, like 45–55 mph, and fades above or below it
- Steering wheel oscillates side to side
- Feels different from a steady vibration
Likely causes
- CommonTire imbalance at a specific resonant speedSome imbalances only become noticeable in a narrow speed band due to how the vibration resonates through the suspension.
- PossibleLoose or worn steering or suspension componentPlay in a tie rod or ball joint can let the wheel shimmy at certain speeds.
- PossibleBelt separation inside the tireAn internally damaged tire can cause an intermittent shimmy that's speed-dependent.
What to do
- Note the exact speed range where the shimmy occurs and whether it's steady or side to side.
- Check tire pressure and visually inspect for bulges or uneven wear.
- Have wheels balanced as a first step.
- Ask the shop to check for looseness in tie rod ends and ball joints while the car is on a lift.
- If shimmy continues, have tires checked for internal separation on a spin balancer.
Tools and parts
Tie rod end if wornSearch: “tie rod end for [your car model]”
When to call a pro
If a quick balance doesn't fix it, have a shop check steering and suspension play, since a loose part at speed can be a safety issue.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.