Today’s article will focus on irregular wears in tyres, causes & solutions. Every good mechanic should know how to read the type of irregular wears in tire as if it were an open book. With a simple look at the tread and seeing how the wear is on it, many clues can be drawn that tell us what is causing this wear and where we should start looking to find the fault . This article will focus on irregular wears in tires, causes and solutions.
Here are 6 types of irregular wear , its cause and how to solve them.
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Types and Causes of Tire Damage
Tires can be damaged for a variety of reasons, and it can happen without the driver being immediately aware of a problem. The most common types of damage are punctures, cuts, impacts, cracks, bumps, and irregular wear. In this article, we are going to explain the signs and symptoms to help you diagnose the problem, as well as give some helpful tips to prevent it from occurring in the first place.
How To Identify irregular wear in Tyres
There are several types of uneven wear, and the most typical varieties are heel and toe wear, and center or side wear. Here we explain how and why they occur.
- Heel and toe wear
Heel and toe wear is a pattern caused by normal use and suspension settings. It is the external visible (and audible) manifestation of various distortion forces that occur in the profile. To explain it in greater depth, we are going to analyze the profile design a little more .
A slight heel and toe wear pattern is reasonable and has no noticeable effect on driving comfort. But, if the wear is higher, it could likely be due to more specific problems, including improper inflation, excessive toe-in of the front wheels or low wear.
- Central part wear
This wear pattern occurs on the wheels of high-powered cars. The high levels of torque generated during powerful acceleration, when driving around town with numerous stops and starts, or when accelerating at traffic lights can rapidly increase wear on the center section of the profile. Even today’s mid-range vehicles have modern engines that can generate high levels of torque and are capable of generating a high degree of slip.
- Side wear
The main individual reason for side wear is the axle geometry. Over time, deviations from the standard specification may occur, for example as a result of aggressive curb riding.
Lowering the vehicle height and using low-profile tires can also adversely affect wheel alignment. When driving, modified suspension arms tend to skew the wheel alignment from the specified position. The problem can catch drivers off guard, as wheel alignment values can be within tolerance limits if measured in static position on an axle gauge bench. But the manufacturer’s alignment data corresponds to the vehicles as they are delivered and does not have to correspond to custom cars. Therefore, the consequence may be increased uneven profile wear.
If the vehicle’s wheels are misaligned, any qualified specialist can correct the drift by realigning the wheels.
- Impact break or bulge
Impact cracks are damage to the carcass (tire cover) after the tire comes into contact with certain obstacles. External protrusions marked on the sidewall indicate the existence of broken cables within the housing.
This type of damage is usually caused by driving over objects – such as curbs or speed bumps – at excessive speed or at the wrong angle. Excessive stress on the housing causes the cables to break. The exact extent of the damage will depend on the speed and angle of impact, as well as the size of the obstacle. Cautious drivers can generally avoid this type of damage, unless an obstacle suddenly appears in front of the vehicle and they cannot get around it.
Ignoring such damage increases the risk of tire failure at some point in the future, either due to profile delamination or sidewall disintegration.
Impact failure is sometimes confused with flank indentation, but they are not the same. As explained below, gouges or indentations on the flank are not cause for alarm.
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- Indentations on the flank
The sidewalls of the tires are not always completely uniform; there may be gouges and indentations and a detailed examination may be necessary to determine the causes. What is essential is to know that indentations do not pose any danger and that they are not detrimental to driving characteristics or safety. The indentations are superficial.
The best way to understand what tire indentations are is to try to imagine a string tied around an inflated balloon and tighten it. If the balloon is the tire, the rope is the cables embedded in the casing that hides the rubber. These cables provide strength and stability to the tire, and transmit the turning and braking forces when driving.
During the tire manufacturing process – or rather, when constructing the carcass to which the steel belt and profile are attached – there are usually one or more overlaps in the carcass. Sometimes such an overlap can be visible as an indentation after the tire is placed and inflated.
But, if in doubt, have a qualified tire specialist check the sidewall indentations.
Cuts are the result of external influences such as poor road conditions, protruding parts of the body, or foreign sharp objects such as stones or glass. If you find any damage in the form of a cut on the tire surface, you should go to your local tire specialist to have your tires checked by an expert immediately.
Punctures are caused by sharp objects on the road — such as nails, screws, or broken glass — that can pierce the tire’s surface. If the puncture is deep enough, the tire can start to lose pressure. If you find that one or more tires are continually losing pressure , or if you find a nail or screw embedded in the tread, see your local tire specialist as soon as possible for repair.
Solutions on Irregular Wear in Tyres
- Change the position of the vehicle’s tires at regular intervals (unless the vehicle manufacturer recommends otherwise) to facilitate even tire wear. For example, the position of the tires should be rotated when changing from summer tires to winter tires with the change of season.
- Shift Wheels from the drive axle to the non- drive axle:
By shifting wheels from the drive axle to the non-drive axle on a regular basis, drivers can expect their tires to have a uniform wear pattern. But, as always, keep in mind the recommendations of the vehicle manufacturer.
- If you find yourself in the situation of having to go over an obstacle on the road, approach slowly and as close to the perpendicular as possible.
- Next, check the tires for any exterior damage such as cuts, cracks or bumps.
- Finally, avoid aggressive driving on unpaved roads.
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