Wheel Balancing vs Alignment: Differences and Signs

Table Of Contents:

  • What is the difference between wheel balancing and wheel alignment?
  • What is wheel balancing and how is it done?
  • What are the signs that your wheels need balancing?
  • What is wheel alignment and which angles are adjusted?
  • What are the signs that your car needs an alignment?
  • When do you need balancing and alignment together?
  • How do you keep your balancing and alignment right for longer on Saudi roads?
  • Frequently asked questions about balancing and alignment

Wheel balancing means distributing weight evenly around the tire and rim so they spin without vibration, while wheel alignment, known in tire shops as alignment or arm alignment, means adjusting the direction and tilt of the wheels relative to the car body and the road so the car tracks straight and the tires wear evenly. In short: balancing fixes shaking and vibration, and alignment fixes the car pulling to one side, an off-centre steering wheel, and uneven wear. In this article we explain each service separately, the signs that you need it, and when you need both together.

What is the difference between wheel balancing and wheel alignment?

Many drivers confuse the two services because they are usually done at the same tire shop, but each has a different purpose, machine, and set of symptoms:

  • Purpose: balancing evens out the weight of the tire and rim as one unit, while alignment adjusts the angles of the wheels relative to each other and to the car body.
  • How it is done: balancing is done on a balancing machine after the wheel is removed, while alignment is done on an alignment rig with the car standing on its wheels.
  • Main symptom: the need for balancing usually shows as vibration in the steering wheel or seats at certain speeds, while the need for alignment shows as the car pulling to one side or an off-centre steering wheel.
  • What gets adjusted: in balancing, small weights are added to the rim; in alignment, the steering linkages and adjustment points in the suspension are set.
  • The result: neither service replaces the other, because a car can have balanced wheels with poor alignment, or the other way round.

 

What is wheel balancing and how is it done?

  1. No tire or rim leaves the factory perfectly balanced; one part may be slightly heavier than the rest, and at high rotation speeds this small difference turns into noticeable vibration.
  2. The technician removes the wheel and mounts it on a balancing machine, which spins it and identifies where the extra weight is and how much weight is needed to offset it.
  3. Before measuring, the rim must be cleaned of mud and sand packed inside it, because this changes the weight distribution and gives a false reading.
  4. The technician adds small metal weights to the inner or outer edge of the rim, either clip-on or adhesive depending on the rim type.
  5. The test is repeated on the machine until the reading shows the wheel is balanced; the wheel is then refitted and the nuts are tightened in a crisscross pattern to the torque specified by the car manufacturer.

 

What are the signs that your wheels need balancing?

  • Vibration in the steering wheel that appears at a certain speed and may ease once you go past it, usually coming from the front wheels.
  • Vibration in the seat or floor of the car, which often comes from the rear wheels.
  • Wavy wear or repeated patches on the tire tread instead of even wear.
  • A balancing weight has fallen off, and you may see the mark where it used to be on the rim.
  • New tires have been fitted, a tire has been removed from the rim to repair a puncture, or a wheel has taken a hard hit from a pothole or speed bump.
  • Because vibration can have other causes, such as the brakes, the suspension, or the engine, see our article on the most important causes of car vibrations if it continues after balancing.

 

What is wheel alignment and which angles are adjusted?

Alignment is not about the tire itself but about how the wheels are mounted on the suspension and steering systems. The car is placed on a special rig with sensors or cameras that measure the angles and compare them with the manufacturer’s specifications, and the technician then adjusts them. The most important angles are:

  • Toe: the direction the front of the two wheels points, inwards or outwards, when viewed from above; it is one of the angles with the greatest effect on how fast tires wear.
  • Camber: the inward or outward tilt of the top of the wheel when viewed from the front; when it is off, one edge of the tire wears more than the other.
  • Caster: the forward or backward tilt of the steering axis when viewed from the side; it affects the car’s stability in a straight line and how the steering wheel returns to centre after a turn.
  • Not every angle is adjustable on every car; if one of them is out of specification and cannot be adjusted, this may point to a bent or damaged suspension part that needs repair.
  • A four-wheel alignment is preferable if the car allows it, because the rear wheel angles also affect the direction the car travels.

 

What are the signs that your car needs an alignment?

  • The car pulls to the right or left on a flat, straight road without you moving the steering wheel.
  • The steering wheel is tilted and not centred while the car is driving in a straight line.
  • The inner or outer edge of the tire wears more than the rest of the tread, or there is a slanted, feather-like wear you can feel when you run your hand over the tread.
  • The tires squeal in corners at normal speeds, or the steering feels unstable or does not return easily after a turn.
  • Note: a car pulling to one side can be caused by different air pressures between the tires, so check the pressure first and read about how low tire pressure damages car performance.
  • The cause can also be a sticking brake on one wheel, especially if it comes with a rubbing noise or smell, so review the signs that your car brakes are failing before deciding the problem is the alignment.

 

When do you need balancing and alignment together?

  1. When fitting new tires: balancing is essential for every tire, and an alignment check protects the new tires from early wear.
  2. After replacing steering or suspension parts, such as tie rod ends, control arms, or shock absorbers.
  3. After a hard hit on a kerb, a pothole, or a speed bump taken too fast, especially if the car feels different to drive afterwards.
  4. When changing the size of the rims or tires, or after raising or lowering the car; to learn about the effect of this change, read about how the wrong rims affect fuel consumption.
  5. As part of routine maintenance: it is advisable to check the alignment from time to time according to the owner’s manual, even without obvious symptoms, because a slight misalignment wears tires out silently.

 

How do you keep your balancing and alignment right for longer on Saudi roads?

  • Slow down before speed bumps and potholes, and avoid climbing kerbs or scraping against them when parking.
  • Keep the recommended air pressure in all tires and check it regularly, especially as temperatures change between summer and winter.
  • After desert trips and driving in sand or mud, wash the inside of the rims, because packed mud and sand can cause vibration that feels like poor balancing.
  • Rotate the tires (swap their positions) as recommended in the owner’s manual so wear is spread evenly.
  • Do not delay fixing any knocking or looseness in the suspension and steering, because loose parts quickly throw the alignment off even if it was recently set.

 

Frequently asked questions about balancing and alignment

  1. Are balancing and alignment the same service? No; balancing evens out the weight of the tire and rim, and alignment sets the wheel angles, and each has its own machine and symptoms.
  2. Does alignment fix steering wheel vibration? Usually not; speed-related vibration is most often caused by unbalanced wheels or a defect in the tire or rim, while alignment fixes pulling and uneven wear.
  3. Why did the vibration come back after balancing? The rim may be bent, the tire may have an internal defect, a weight may have fallen off, or the wheel may not be seated correctly on the hub because of dirt or rust.
  4. Do I need an alignment every time I change tires? It is not mandatory every time, but it is advisable, especially if the old tires were worn unevenly.
  5. Can I do balancing or alignment myself? Both require precise measuring equipment, so it is best to have them done at a properly equipped tire shop.

 

Balancing and alignment are simple services, but they protect your tires and suspension and make driving more comfortable and safer. Remember the easy rule: vibration usually means balancing, and pulling or wear on one edge usually means alignment. If the symptoms continue after both services, do not ignore them; ask for a full check of the tires, rims, suspension, and brakes.

FAQs

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