Tyres: The most underrated part of the car

omaexx 07-02-2018 Auto
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Many people do not think about tires after. Only if they do not pass the MOT inspection, then we buy a new set of tires. Still, you can safely call the tires most underrated part of your car. For example, how do you know which tire on your car should be? And what should be the profile of a good tire?

Where the perfect tire must meet?

When the slip schools in the Netherlands, you learn that a car can lose its grip on the road. And with a little luck you will learn on this slip schools also what to do if you find yourself in such a situation. But if it's good, it never happens to you. Before that tire manufacturers are trying to make their turn.
It is actually a miracle that so few cars skidding. Because the contact surface of a car with the road is surprisingly small. It is often jokingly talked about four coasters. And really a bit. For a not too big car concerns the surface of an A4 piece of paper. That little piece of rubber is sometimes considered to transfer all the forces of the car on the road. So steering, braking and accelerating. It therefore matters a lot what kind of tires you put on your car. Who always wants the best possible driving may have to take a team of tire changers in service. Because a sweltering summer day calls for different tires than one morning with severe frost. And in dry weather you drive the best on a tire which is very dangerous when it rains. But no one makes sense to change tires every day. In practice, all sorts of compromises are therefore closed in the development of a car tire. So you have the best grip in dry weather tires with no tread. But as soon as it rains, a band started in no time sliding over the water on the road surface. The compromise: all tires have profile, so the water can drain. And there are still more compromises. Because a lot of characteristics of tires are inconsistent with each other. Soft rubber gives a lot of grip, but wear faster. A band with a lot of profile does well in the rain, but again makes more noise. And tires that are not too inflated, but nice comfortable ride, but frugal is not the weather. The motorist obviously want a safe tire that you hardly hear, you will always have a grip on the road, where it once more comfortable and economical to drive.

How is it that my car is slipping?

When hitting a car in the slip you immediately feel how much grip who spoke little pieces of rubber normally on the asphalt. When you slip your car you pretty shaken up. This is because rubber meets the road 'sticks'. These so-called 'adhesion' allows for most of the grip. If it rains, you should have it somewhere else.
Rubber is flexible, and a road surface is not completely smooth. The rubber and the large holes, for example, very open asphalt concrete as a kind of gear wheels engage in each other. Whether wet or dry, you do not want the footprint of the tire slipping on the road. But when you brake, and acceleration controls, should just slip some of that footprint. The harder you acceleration or passing through a curve, the greater the portion which is slipping. At some point you go over a border, and slides the entire footprint. Then the grip decreases rapidly. Too hard acceleration for example. Then the wheels turn drive faster than the car. Under hard braking are blocking wheels and a longer braking distance the result. And with a little luck you go into a bend in the slip. All you'll need with the tires today still rather do your best for.

Why winter tires?

Especially in winter come on the road often slip parties. It has become almost fashionable to drive on winter tires. That has partly to do with new legislation, including in Germany. Today, you are obliged to adapt your car to winter weather. That includes people who go skiing. The difference between summer and winter is immediately visible: the winter has a lot of profile and many fins. These are cuts in the rubber, making the rubber remains flexible even when cold. If the winter is not just a trick of the tire industry for us to beat more money out of pocket? The answer is no. On snow they really do better. And even on ice, they have more grip. Them to find various tests on eg youtube.com. The tests are pretty convincing. Two cars as speeding, braking. The car with winter tire is properly before the end of the runway still. The car with standard tires pops with big sails on two cars that are set up at the end of the runway.
The winter really only benefits? Well, you need to purchase the bonds and exchange them twice a year. Because in the summer wearing a winter faster than an all seasons'- or summer tire. The rolling resistance of the winter will be a bit stronger, which leads to higher consumption. But if you swap on time, then you no longer wear. Because in winter you save your summer tires.

Tires are too soft

With regard to wear, anyway we can do something better. Fifty percent of all Dutch driving on underinflated tires. That takes a lot of energy. A soft tire is pressed further, and as a higher rolling resistance. If a tire is too soft, you mostly ride on the outer sides. This not only ensures that the car more fuel slurps. The tire wears faster, and can even be completely destroyed. And a not-too-inflated tire may be comfortable ride, but a car with underinflated tires is less well through the turn. Soft tires namely bend more easily, and the wheels in a turn not completely right above the tread.
You hear sometimes called a manufacturer that his tires efficient driving, but in practice the differences are small. You better watch the tire pressure. It lets you instantly win a lot more. The rule of thumb is to indicate links ten percent harder to pump than the manufacturer of the car. The manufacturer puts the emphasis on comfort. But if you pump up the tires a little harder, then you drive more economically, and the car responds even more alert.

Its wide tires better?

Who is tough, has wide tires under the car. Because that have the racing cars of the big guys like Alonso and Massa also. Yet wide not always better. You might think that a wide band makes more contact with the road, but that's not necessarily true. The footprint of a broad band is wider, but also shorter than that of a narrower. The main advantage of wide is that it yields more grip in cornering. But there is also a significant drawback to. Wide tires have to be processed in wet weather much more water. A narrow tire cuts like a knife through the water. With a wide band can not. You will therefore have previously suffered from aquaplaning.