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Symptom guide

6 Signs Your Wheels Need Balancing

Match what your car is doing against these six symptoms. Most are easy to diagnose from the driver's seat.

  1. 01

    Steering wheel vibration at 60 to 70 mph

    High

    The single most reliable sign of front wheel imbalance. The shimmy starts at a specific speed (often 50 to 55), peaks somewhere between 60 and 70, and reduces or vanishes above that. If you ease off the throttle and the vibration eases, balancing is the first thing to try.

  2. 02

    Vibration felt through the seat or floor

    Medium

    Front-wheel imbalance is felt through the steering wheel; rear-wheel imbalance is felt through the seat and floorpan. If the steering wheel itself is steady but the cabin shakes at speed, your rear wheels are the suspect.

  3. 03

    Cupped or scalloped tyre wear

    High

    Run a hand around the inside of the tread. If you feel uneven dips or scallops every few centimetres, that is cupping caused by the tyre bouncing minutely at speed. Long-term imbalance is the usual cause.

  4. 04

    Vibration that returns months after fitting new tyres

    Medium

    New tyres are balanced at fitting. If the vibration returns after a few thousand miles, a wheel weight has likely fallen off, often after kerbing or a heavy pothole strike. A quick rebalance usually fixes it.

  5. 05

    Increased road noise at speed

    Low to medium

    Cupped wear from prolonged imbalance produces a humming or roaring noise that grows louder with speed and pitch with road surface. The noise will not vanish on smooth tarmac the way it would with a worn bearing.

  6. 06

    Uneven tyre wear not explained by alignment

    Medium

    If your tyres show patchy wear (alternating patches of more and less worn rubber) rather than the inner or outer edge being shaved, that is balance-related, not alignment-related. Get a balance and inspect the rim for damage.

What it is NOT

Several other faults feel similar but need different fixes. Check these before booking:

Warped brake disc

Vibration only when braking. Pulses through the brake pedal. Disc skim or replace, £80 - £200 per axle.

Worn wheel bearing

Constant hum that pitches with speed but not with steering. Replace the bearing, £100 - £350 per side.

Damaged CV joint

Clicking or knocking on tight turns, especially in reverse. Replace driveshaft or CV boot.

Misalignment

Pulling, off-centre steering, edge wear. See balancing vs alignment.

What to tell the garage

A clear symptom report saves diagnostic time and money. Three questions to answer:

1
At what speed?

Note the speed where the vibration starts, peaks and reduces. Be specific: 'starts at 55, worst at 65'.

2
Steering wheel or seat?

Front imbalance shakes the wheel. Rear imbalance shakes the seat. This guides which wheels they spin first.

3
Under braking?

If the shake is only when braking, that is brake disc, not balancing. Save them the diagnostic.

Cost of ignoring it

  • Tyre wear. Cupped wear can shorten tyre life by 25 to 40 percent. A premature replacement set is £200 - £600 for four.
  • Suspension components. Long-term imbalance accelerates shock absorber and bush wear. A pair of front shocks runs £200 - £400 fitted.
  • Fuel economy. Cupped tyres roll less efficiently. A 1 to 3 percent fuel penalty is realistic.
  • Driver fatigue. A buzzing steering wheel on a long motorway run is genuinely tiring.
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