The frequently asked question by those who just has a car is when is the time to change a tire? how often the tires shall be renewed? What are the signs to replace tire? Can the tires continuously used until certain years? and so forth.
Why we have to give tight concern to car tires? Because it’s just like shoes, the only part of the car that directly contact with road.
Next we extract from various sources, below are the list of alerts and symptoms that inform us the signs to replace tire:
1. Three Years Life Time
Car tires are made of elastic rubber material. The elasticity of the rubber will continue to change over time, the longer the rubber will decrease its elasticity, until finally it becomes brittle due to loss of flexibility. Hence, indeed it has life time.
The ideal utilization time of a tire is 3 years, so it’s best to immediately change your tire after 3 years of usage, even though the patterns are still thick, such as in case of rarely used car. Some tires can serve in more than 3 years, but mostly possible that the tires no longer provide comfort. Because it has hardened or no longer has enough flexibility.
There are two inconveniences due to hardened tires, which are harder vibrations on the car, even more in bumpy or uneven road, sometime it turns into strokes as if our tires are not made of rubber.
The second inconvenience is more road noisy from the tire, the sound of the tire friction with the road going into the cabin disturbing the comfort, especially for those who love to listen to music, they could be annoyed by the noise.
In addition, using tires that have hardened has the potential to shorten the life of the car’s legs components such as suspension, because these components must work hard to withstand more vibration.
To find out the age of the tire, each tire is given a four-digit code on the side, for example 2516 which means that the tire is made at the 25th week of 2016. Usually the 4-digit number is covered with an oval line, some are preceded by several letters, there are also marked with an asterisk before and after.
The sign of the production time should also be noticed when buying tires. Do not buy a tire that has been settling in a tire shop for years. If possible, buy tires that are produced no more than 6 months before you buy it.
2. 40,000 km of Mileage
Even though it hasn’t reached 3 years of service life, tires should also be replaced if the mileage has reached 40 thousand kilometers. For example, especially for cars often travel far, so that in around 2 years it has reached 50 thousands km.
Although flexibility is still good, tires that have traveled long distances will experience wear and tear. For normal use, cars typically travel around 15-20 thousands km per year, so that 40 thousand km should be reached in about 2 to 3 years.
3. Thickness Reaches the TWI Limit
Each car tire is given an indication of TWI, which stands for Tread Wear Indicator. The sign is the tire wear limit which is allowed to be used, if the tire tread has touched the TWI triangle, the tire must be replaced.
There are two indicator positions of the TWI on tire, which is on the edge of the tire and in the center of the tire. For the edge, you will see a small triangle in the area below the tire pattern, while the one in the middle of the tire is a bulge that is not as high as the tread.
If one of these signs has been reached, that means it’s time for you to change the car tire.
4. Bald Tires on Center Side
In addition to the 3 previous conditions that are of a general standard from the tire manufacturer, several other conditions due to driving usage or habits can also cause the tires need to be replaced immediately.
For example if the tire get bald in the middle, while the pattern is still good at its edge. If this has happened, the tire should be replaced. Because that means the tire thickness is no longer uniform.
These conditions occur due to tires often filled with too much air pressure. Usually because the car owner does not pay attention to the air pressure standards suggested by the car manufacturer. The standard air pressure on the tire is usually written on the side of the driver’s door, precisely under the B-pillar.
5. Bald Tires on Certain Sides
There are also tires that become thin out in certain parts, for example only on the edge of the outside or inside. Many causes of this condition include:
- Often using tires with less air pressure, so the tires are bald on the outside.
- The damaged suspension, so that the grip of the tire to the road is uneven and the tires often bounce off, this can result in tire wear on certain sides.
- Imbalance tires, so that the tire wears on certain edges.
- Defective or aggressive driving style causing tires to run out on certain sides, such as often brake suddenly until the tire rubs hard with the asphalt.
It is better if the things or bad habits above are avoided so that the tire is more durable, but if it has already happened, the tire should be replaced immediately for safety reason.
6. Tire has Lumps
Lumps on the tires often occur. The lump is a sign of damaged reinforced yarn or wire construction. The presence of lumps will cause nonuniform tire resistance to hold the car load. Tires with lumps are easily broken because there are some parts of the tire that no longer hold the air pressure.
Lumps on a tire can be caused by a number of conditions, for example air pressure is often less than the standard that certain part of the tire must bear heavier loads than other parts.
Lumps can also be caused by frequent passing through broken or perforated roads at high speeds or with excessive loads. So that in certain conditions the tire load is not balanced, causing the tire reinforcement to break.
If there are already several lumps on your car tire, you should immediately replace it with a new tire. Because it’s already vulnerable and you’re at risk of safety.
7. Cracked Tires
We find cracks on tire side, usually this happens because the tire has too much contact with heat for a long time. So that the tire becomes damaged or easily brittle before its proper age.
For example car tires are always dried and not placed in the garage when at home, so that the tires are exposed to hot temperatures throughout the day and cold temperatures at night continuously. plus when the owner is lazy to clean the tires from dust.
It’s best to do tire maintenance regularly by cleaning tires and giving special fluid for tires that can help maintaining tire flexibility. Also don’t let your car dry in the sun. However, if there are cracks on your car’s tire, it should be replaced immediately, because it is an unsafe condition to drive.
8. Patched too Often
Leaking tires due to sharp objects are frequent and difficult to avoid. For tubeless tires, usually it’s enough by patching it then the tire can function again as before.
But if it has leaked too often and there has been many patches, the tire strength will decrease. We recommend to replace the tire with new one.
9. Blisters due to Hard Objects
There are times when our car tires come in contact with hard objects such as road sidewalks or hit a hole in a damaged road, until there are considerable blisters on the tire.
Indeed, tires can still be used and like there are no obstacles, but the condition of the tires is no longer perfect that it has potential problem. The resistance of each side of the tire is no longer uniform. For example, if you have to go back through a damaged terrain again, there is a possibility of tire rupture.
10. Lifted Tire Patterns (Heel toe Wear)
Heel Toe is a condition of a tire with a raised profile. This happens to car tires that often go through damaged roads, especially cars that are driven at high speeds on uneven terrain, so they often brake hard enough on the road. Another cause could be suspension bushings, worn wheel bearings and ball joints.
As a result of the brakes on the streets that have a lot of rocks or other hard objects, the tire patterns are lifted, because they are forcibly attracted. This condition will cause quick wearing out, then it should be replaced with a new tire.
Those are some conditions that become a sign to replace car tires. Because the function of the tire is very critical for the car, the car owners should pay attention for routine maintenance on the tire by diligently cleaning it. It will be better to smearing it with a special liquid for tires, in order to maintain its durability. Cleaning and sparkling car tires will also add to the beauty of your vehicle.