Why wheel balancing is necessary

Why wheel balancing is necessary?

 If the tyre balance is maintained on vehicle, it provides smooth ride because balancing is a key component in tire wear. Balancing minimizes the tyre vibration and bounce. So as a result it perks up traction, steering control and increase the life of tyres. No matter you have a brand new set of tyres which are fitted to your car, but after weeks and months of wear, they eventually lose their balance. As soon as the tread wears, it happens that the allotment of weight around the circumference of a tyre tend to change which results in altering the balance of the tyre and wheel assemblage. And tyres are slightly out of balance with one-another, at this point tyres need to be rebalanced (as 1/4 ounce of imbalance can produce a detectable vibration). Wheels and tyres which are out of balance create vibrations which become gradually worse when the vehicle's speed is increased. The vibration normally starts at 40 to 50 mph and as the speed increases, it becomes gradually intense. But usually it mostly depends on the size and weight of the tyres and wheels, and also on the size and weight of the vehicle, as well as the sensitivity of the steering along with suspension, and the amount of imbalance.

Wheel balancing machines classify the point to fit a counter weight in order to smooth out the vibrations that mostly take place when joining a wheel and tyre unit together. Therefore because of wheel balancing, what you will get? Off course a smoother ride and better wear from your tyres, along with you will save your time and money. Most people’s knowledge of balancing is confined only to car wheels and tyres that must be balanced before fitting to cars. Through this article we will help you to understand the balancing process and we will help you to know why it is important.


If vibration problem occur when you increase the speed of your car then for the checking of the balance of your tyres becomes crucial, it is advisable to take your vehicle to repair shop where it will be determined whether the vibration is due to balancing of wheels or some other factors like, they can also check the steering and suspension, for any other problems, that cause a vibration or shake. Very often the wheel/tyre assemblies on a vehicle are in balance but still the vibration is felt. Here are some of the other causes of vibration:

  • Bent wheel can cause vibration,
  • Tyre out of round (radial or lateral run out),
  • Wheel-to-axle mounting error can cause vibration,
  • Inconsistent tyre sidewall stiffness (force variation) can also cause vibration,
  • Brake component wear or failure too,
  • Drive train or engine component wear or failure,
  • When due to suspension wear or failure,
  • When wheel bearing wear or failure,
  • When wheel alignment is out, it can too cause vibration.

In case if the problem lies with the tyres, the solution is to rebalance them in order to eradicate vibration. In order to balance tyres and wheels correctly, up-to-date and accurately calibrated wheel balancer is required to fix the problem. Calibrated wheel balancer, if it is accurate and up to date can achieve both static (at rest) and dynamic (in motion) balance. Bubble wheel balancers which are quite old fashioned now can achieve static balance, but spin balancer helps to get dynamic wheel balance. Spin balancers are important for contemporary larger, wider heavier tyres and rim packages, as well they are equally indispensable for run-flat tyres that have usually thicker and stiffer sidewalls.Todays wheel balancers are able to pick up vibrations at much lower speeds (only 100 rpm, or 10 to 15 mph), they have graphical displays which make the information easy to read and easy to understand as well as data entry for wheel’s width and diameter also saves time. You should have your wheels balanced any time whenever your tyres are repaired or rotated.

Types of unbalance

A tyre or rim which gets Imperfections, blemishes in the rubber can throw a wheel "out of balance." Which makes the one section of the tyre or rim heavier than the other sections. Due to this heaviness, the tyre can wobble or even jump as it rolls down to the road. Wheel balancers are used to identify where wheel weights should be applied to the rim. Those weights are used to balance any heavy spots.

Below is a picture which will help you to know what this means, there is a heavy spot on your wheel. A heavy spot   prevents tyres from rotating in a tightly focused circular motion.  Vibrations, poor handling, lower gas mileage, and uneven tire wear is mainly caused due to Weight differences of less than an ounce. The balancing system directs a technician to put a counter weight on the rim's outer exterior to offset the unevenness. When the balancing system tests for almost perfect weight distribution, the assembly is in balance and it will not vibrate.








There are three types of unbalance:

  1. Static unbalance – this Occurs when there is a heavy or light spot in the tyre that prevents the tyre from rolling consistently and this causes the tyre and wheel to experience an up-and-down motion. This creates a hop or vertical vibration .This unbalance is corrected only in one axial plane.
  2. Couple unbalance – is where the mass axis intersects the running axis. This type of unbalance is usually corrected in two planes.
  3. Dynamic unbalance – this Occurs when there is unequal weight on one or both sides of the tyre/wheel assembly's lateral centerline, this creates a side-to-side wobble.  This unbalance is corrected in two planes.

Steps for Balancing a Tire/Wheel Assembly

Below are the balancing steps but these will vary somewhat depending on the type of equipment used.

 A technician must:

  • First of all turn on the balancer,
  •  He should clean the tire, rim flange and wheel,
  •  He should then mount the tire/wheel assembly on a balancer,
  • Then he should enter the A & D wheel dimensions,
  •  After that he should enter width wheel dimensions,
  •  He should then lower the hood to spin the wheel and check dimensions,
  •  After that he should raise the hood after the tire stops rotating,
  • He must note when the inboard center bar blinks,
  •  After that he should attach inboard corrective weight,
  •  Again he should press NEXT, which rotates the wheel,
  •  He should also note when the outboard center bar blinks,
  •  Then he should attach outboard corrective weights,
  •  And in the end, he should lower the hood to re-spin and check balance.

Modern cars and light trucks are well tuned vehicles, and they tend to give good performance and driver’s comfort along with fuel economy and tyre’s life, but all these factors   can be depressingly impacted by even the slightest imbalance. Now days in modern times, fractions of an ounce truly do matter. Once you drive away with your balanced tyres, every bump or dip in the road start throwing them out of balance again. Wheel balancing as a part of regular maintenance of your vehicle is crucial. Normally, wheels need to be balanced every 4,000 to 6,000 miles.