We may have been introduced to many safety aspects of the car such as airbag, ABS, VSC and many more. This is what we can call as the traditional safety system in the car and due to the technologies advancement on the safety of the car, they are Advanced Driving Assistance System or simply called as ADAS where the safety aspect will be in an autonomous mode or semi-autonomous mode to assist us further while we are driving. However, they are another safety feature of the car that had been with the car since the day of the car introduction and that is none other than the tire of the car.
Unfortunately, the tire is one of the most underrated and ignored safety aspects in the car by the car lovers. No matter how well the car is built and also the cost involved in building the car as premium, ultra-premium or high performance the only part that will contact the road condition is the tire hence the tire is needed to be taken such an important consideration. In the article type of tire tread, we had seen how many different types of tire threads and what is their pros and cons.
More to the thread, they are other information that will be printed or displayed in the tire that is also important. The common one is the year of tire made, the name of tire, and the tire brand however they are more tire information labelled in the car and today we will look at some of the compulsory information that will be displayed in the tire.
The speed rating
Had you noticed on the car tire they are little alphabet labelled as H, V, ZR and other. In the Michelin Pilot Sport 4 they are a label of 215/55/17 ZR and what does the alphabet represents in the tire? This alphabet represents the tire speed rating and where it shows the optimal speed that tire can sustain before it is unusable anymore. The speed rating was developed in Europe to maintain the optimal speed for each tire. The higher the alphabet or the speed rating the better that the user can control and maintain the tire at a high speed. For a normal tire, the speed rating can be between H or V where H means that the tire can handle speed up to 210kph and for V can handle speed up to 240kph. For any tire that able to handle more than 240kph, the speed rating labelled can be W and Z. ZR label will usually be for a tire that can handle more than 300kph speed hence the W, Z or ZR label can be found in the tire that had been labelled as UHP(Ultra High Performance) tire.
The treadwear rating
In the car tire too, the user can perhaps notice they are a another number printed after the Treadwear Rating label. This is the Uniform Tire Quality Grade mandated by the National Highway Traffic Safety Administration and is a must in every tire built by the tire manufacturer. In this treadwear rating the higher the number the slower the tire tread will wear down and the lower the number the faster that the tire tread can wear down. For an example, the tire that had been labelled as comfort tire will usually have thread rating from 350 – 400 where it is expected to last until 50000km and for the tire that had been labelled as UHP tire it had a lower thread rating and it can be expected to last before 40000km or 50000km. Both however it subject to tire rotation and the balancing of the car tire by the car user.
In the tire they another label that is called Temperature. The temperature can either A, B or C. The rating read where A is the coolest and C is hottest, and B is in the middle. Why the tire temperature is added in the tire? It is to determine the risk of potential deteriorating when running a tire in a high-temperature situation. Usually, for the tire temperature testing, it will be conducted in a controlled condition by the tire manufacturer. If the tire had been rated C run in run consistently in high temperature it can lead to a blowout of the tire.
The traction rating
They are another number in the tire that will be labelled A and AA. This label indicating the tire traction rating. What is the traction rating? This rating indicates tire performance on the wet situation on the asphalt or concrete surface. This test on the asphalt and the concrete is one the way for the tire manufacturer to test their tire wet performance. The tire that has the rating of AA will perform better than the tire that has A traction. They are one exception of these ratings as Goodyear EfficientGrip Performance had been labelled as A1 under EU regulation and this is the highest rating for a tire. For now, only these tire had been labelled as A1.
In the tire, they are is another rating on how many weight that tire can handle and this is what is called as Load Index. How does this work? Based on the load index timetable on the website https://www.confused.com/on-the-road/maintenance/understanding-tyre-labels-markings-ratings a tire load index as 91 is capable to carry 615kg based on the tire. With multiplied with 4, it means that tire is capable to carry a total weight of 2460kg. Overloading the tire weight can lead to higher fuel consumption and can lead to the inability to control the car in a proper manner that can lead to an accident hence the load index of the tire is a very important label to understand weight handling capability for each car tire.
The car tire had been as mentioned before as one of the most underrated safety aspects when comes to car and driver safety. The tire is crucial for the car users as it is the only thing or equipment that contacts the road and the label in the tire to show the tire capabilities.