TIRE BALANCE

Balancing corrects uneven weight distribution in the tire and wheel assembly. Even a small heavy spot creates a repeated force at every rotation, which at highway speed becomes a vibration you can feel. Left uncorrected it produces cupped tread wear, noise, and accelerated wear on bearings, shocks, and steering components.

Vibration is the main symptom and it typically appears in a specific speed range then fades above and below it. Felt through the steering wheel, the imbalance is likely at the front. Felt through the seat or floor, more likely at the rear. Uneven cupped or scalloped tread wear is another sign of long-running imbalance.

Every time a tire is mounted on a wheel. Also whenever a new vibration appears, after a wheel weight falls off, and typically as part of a rotation service. Canadian winters are hard on wheel weights, since salt and ice impacts can knock adhesive weights loose, so a rebalance at the spring changeover is worth asking for.

Static imbalance makes the assembly hop up and down, called tramp. Dynamic imbalance makes it shake side to side, called shimmy. Modern balancing machines correct both by spinning the assembly and calculating where weights go on the inner and outer rim edges. Both matter, particularly at highway speed.

Yes, all four assemblies do. Rear imbalance shows up through the seat and floor rather than the steering wheel, so drivers often notice it later or blame something else. At highway speed an unbalanced rear assembly stresses bearings and suspension exactly as a front one does.

No, they are different services solving different problems. Balancing corrects weight distribution within the tire and wheel assembly and fixes vibration. Alignment adjusts suspension angles so the tires meet the road correctly and fixes pulling and uneven wear. Shops often recommend them together because both affect tire life, but they are not interchangeable.