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The battle tanks have caterpillar tracks instead of tires because the tires cannot manage the weight of the tanks.When area increases pressure decreases .So when caterpillar tracks are used the pressure decreases and the battle tanks can move easily.
Battle tanks use caterpillar tracks to spread their heavy weight on soft ground. this prevents the sinking of land under the weight of the tank . ( as more the surface area less the pressure .)
Weight distribution. Tracks - caterpillar and band tracks both - spread the weight over a much broader area, reducing ground pressure. Were they on tires, tanks would have much greater ground pressure, and would be much more prone to sinking into the ground.
Tanks don't use tyres - they use steel caterpillar tracks.
A murray tractor can weigh anywhere from 4,700 and up in weight depending on the tires because the tires carry all the weight so it makes it heavyer with the tires on the tractor than it does when the tires are not filled.
Larger and multiple tires and tracks keep the vehicles from sinking into the mud by reducing the pressure on the ground by spreading the weight of the vehicle over a larger area.
They don't need caterpillar tracks in order to function - there are wheel loaders. The purpose of the caterpillar tracks is mobility... excavators are quite heavy, and, as they're often operating on unimproved surfaces (e.g., bare earth), that surface can be very readily prone to sinking under the weight of the vehicle. Caterpillar tracks distribute the weight over a much more broad area than tires (look at the length of a track where it makes contact with the ground.. the weight's distributed over that.. now look at a vehicle with wheels and compare how much surface is in contact with the ground), creating a much lower overall ground pressure.
It is strongly dependent on the driving style, road conditions, vehicle weight & air pressure they are subjected to. Also different types of tires are designed for different durabilities. Some super high-performance tires are only rated for a few thousand miles, while other tires can be designed to last upwards of80K miles. Most/all tires sold today have an estimated mileage lifespan, which a knowledgeable tire shop can tell you when you are looking to purchase tires.
Weight distribution.
Knowing you budget is the first thing to consider when purchasing off road tires. These tires are expensive, so plan ahead. Look for more functional tires over style. Also make sure to find out the weight and size of the tires. You will want to find the lightest weight possible, because it is weight that impacts performance the most.
Semi-truck tires can weigh up to 110 pounds. The tires for passenger cars have an average weight of 22 pounds, and tires for light-weight trucks average around 35 pounds.
Trucks are heavier, so they need tires of adequate width in order to distribute their weight.