Symptom Medium Severity Safe to Drive: Caution At Highway Speed

Diagnosing Car Vibration at Very Last Roll (Low?Speed Vibrations)

Low?speed vibration as a car rolls to a stop often points to wheel, suspension or drivetrain imbalances. Identifying the cause helps prevent premature wear and ensures safety.

Potential Causes

Wheel imbalance or uneven tire wear High Probability

Imbalanced wheels or uneven tire wear can produce vibration at low speeds when rolling due to irregular rotation forces affecting ride smoothness.

Suspension component wear (bushings, shocks) Medium Probability

Worn suspension parts allow excessive movement, which is more pronounced at low speeds and during roll to stop.

Engine misfire or mount wear Medium Probability

Misfires or deteriorated engine mounts allow engine vibrations to transfer into the chassis, felt at low speeds.

Brake component drag or rotor unevenness Medium Probability

Brake drag or slightly warped rotors can cause pulsation/vibration noticeable when rolling to a stop.

Diagnostic Steps

  1. Inspect Tires and Wheels

    Check for uneven tire wear, proper inflation and wheel balance.

  2. Check Suspension Components

    Visually and physically inspect shocks, struts and bushings for wear or looseness.

  3. Scan Engine Codes and Live Data

    Use OBD?II tool to check for misfire or fuel trim abnormalities.

  4. Inspect Brake System

    Check for brake drag, warped rotors, or uneven pad wear.

DIY Fixes

Balance Wheels and Check Tire Condition Beginner
Estimated Cost: $50 - $100

Replace Worn Engine Mounts Intermediate
Estimated Cost: $100 - $300

OBD-II Live Data Analysis

Use a scan tool to monitor these parameters. Comparing live values against the normal range can help identify the root cause.

PID

Long Term Fuel Trim (LTFT)

Normal Range +/- 10%
Abnormal Condition > +15% (Lean)
Technical Insight: Indicates unmetered air or fuel delivery issue that can cause rough idle/vibration even if no specific low‑speed code appears.
PID

Misfire Counts

Normal Range 0
Abnormal Condition >0
Technical Insight: Non‑zero misfire counts at idle/low speed indicate combustion issues contributing to vibrations.

Frequently Asked Questions

Can low tire pressure cause vibration when stopping?

Yes, uneven or low tire pressure can cause uneven rotation forces that result in vibrations especially at low speeds.

Is it dangerous to drive with this vibration?

Minor vibration is usually not immediately dangerous but should be checked soon, particularly if it increases or occurs during braking.

Will wheel alignment fix the vibration?

Alignment helps if uneven wear or suspension misalignment is the cause, but it may not fix engine or brake related vibrations.

Commonly Related Terms

Vibration when coasting to a stop Shaking at very low speed Car shudders as it comes to a halt Vibration just before stopping

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