All car tyres may appear the same but they aren't. Road tyres have diverse features designed to maximize their performance for particular types of use. Though, these differences pale into unimportance when you ponder the different tyres offered for competition use.
Rally car tyres must cope with a vast range of surfaces in infinite different climatic conditions. Furthermore, rally car tyres usually have to be road authorized and must last longer compared to racing car tyres.
How the special tyres work?
Inspecting two types of rally car tyre gives an idea of how the several factors in the tubeless tyres work together. Gravel tyres must clear away the upper coating of soft dust or loose gravel, as car tyres must clear away rainwater. To do this, they have big, rough blocks that are made of comparatively soft rubber. This lets the tread's blocks grip while shielding the supporting plies that lie under them. The tyre tread and carcass's being firm enough to resist destroying while being suitably elastic to return to their early shape guarantee durability and a long life.
Ice tyres can boast an effective grip-enhancing addition. Certain can have up to 380 carbide-tipped rivets in their tread. At 75mph, every stud hits the snow 17 times - per second! The extraordinary part - other than that the studs are still present when the car stops - is that the car is running on a total of about 50 studs at any one time. The overall area the studs offer is about the size of a postage stamp.
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In certain cases, the tyres have no tread at all. Such tyres are termed slicks and are used in drag racing. 'Top Fuel' dragsters are the fastest and can reach 330mph in not more than 4.45 seconds - the time it takes them to cover the quarter mile. Accelerating faster than the space shuttle launch vehicle requires as much hold as can be found.
It's common for all types of dragsters to do something impressive. The motorist places the car so its rear tyres are sitting in two puddles of water laid down nearby the start of the drag strip. The driver then applies power, rotating the rear wheels in the water. The instant result is enormous clouds of rubber smoke and steam around the back end of a car that's standing virtually still at virtually full throttle.
Every so often, drag racing car tyres look definitely soft as the car approaches the start line. This is predictable, as the tyre pressure used is around the 12 to 15 psi mark. Why so soft? Soft tyres give better control but they have another advantage. As the wheels rotate faster, the tyres enlarge. This is like putting greater wheels on the same car; drivers get a higher top speed from the tyres' circular increase.
As you can see, even from these two forms of motor sport, specialist car tyres are necessary. They do what's asked of them and they increase the performance of the car involved in of any kind of sport is concerned. Think about this when you find yourself considering car tyres are all the same!
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