How To Use Tire

Greetings to all consumers and drivers!

We’d like to first express our gratitude to consumers and drivers who have plumped for our products, and we hope you are healthy and have a safe trip. You usually put on special footwear when you intend to do a specific activity. In the same way, the tires of an automobile are actually tantamount to its footwear and considered as the last chain to be in contact with the road surface that transmit traction to the road surface, enable better vehicle performance, and absorb road shocks. They are designed to absorb road and vehicle shocks, enable the vehicle to move in a direction through transmission of engine’s power to wheels, accelerate, make the vehicle stop by using its brakes, change the direction of movement, etc.

You guarantee your safety while driving by keeping the tires safe; moreover, the fuel consumption will decrease and vehicle depreciation rates will remain at low levels. The first point to note is that the tires produced in Kavir Tire Company are all under warranty on condition that there are any defects and other problems for a period of 48 months from the production date inscribed on the sidewall of the tire. In this way, if you observe the tire care and maintenance tips and on condition that there is a problem in performance of your tire, you can contact and visit our after-sales service agencies throughout the country in order for them to lay the foundations for replacing the defective tire with a new one.

It is not a hard work to take care of tire; it needs due care and attention.


  • • Checking tire pressure is more important than any other thing in extending the life of tires and taking care of them.
  • • You can find the relevant information on checking tire pressure in the manual, or rather, on the internal labels of the vehicle, the boot, and also in the internal part of the fuel tank;
  • • Inflate the tires as much as recommended by the automobile manufacturer;
  • • Check the tire pressure every month and/or after covering a distance of 5550 kilometers and also before making a long trip using a pressure gauge;
  • • Check the tire pressure when tires are cool as they heat up while driving which leads the tire to grow larger and its pressure to increase;
  • • Never try to inflate tires up to the degree inscribed on their sidewall; this shows the maximum amount of air that can be inflated into the tire.


Under-inflation of tires is a quick killer of vehicles.

Consequences of driving on under-inflated tires are as follows:

1 - Too much of the tire’s surface area touches the road, which results in increasing friction.
2 -A decrease in the efficiency of tires particularly when handling. 
3 - An increase in fuel consumption.
4 -Tires are dislocated from the wheel rim, the air leaks out of the tubeless tires, and also the wheel ring is damaged.

Consequences of driving on over-inflated tires are as follows:

1 - Lack of control when driving and handling and its dangerous consequences (reduction of the size of its footprint in contact with the road). 
2 - The tire bulging out along the center of the treads, resulting in wearing down. 
3 -The steering system and suspension being damaged.
4 - A decrease in the capability of tires to pass over the bump evenly.

Recommendations to extend the life of tires:


  • • Note that the wheel ring is supposed to be sound, and without cracking and rust. The size of the wheel ring must be appropriate for that of the tire.
  • • Damage to the wheel rim due to mis-installation on the ring causes the bead pivot to be damaged, and if the edge of that area is damaged, the air will infiltrate into the internal layers of the tire and consequently some part of its body will bulge out.
  • • Use non-chemical lubricants such as soapy water in order to easily mount the new tire.
  • • Note that during a long trip the tire heats up as well as wears down due to the consecutive driving time and continuous friction with the road surface; therefore, it would be better to stop for a while every so often so as to let the tires cool down.
  • • The wheel is required to be substituted with the other one in the same or other row after covering a distance of 10000 kilometers, which results in high performance as well as gradual erosion of tires.
  • • On condition that you intend to mount sport tire, you’d better consult the manual concerned with the tire substitution, or rather, you can consult an expert in this field.
  • • If the available tire is bigger than the standard one recommended by the manufacturer, it will create problems in handling and also increase fuel consumption; moreover, the odometer will not show the speed as well as covered distance of the car in an accurate way.
  • • Using nonstandard tires (with a longer diameter) causes the suspension system to decrease in efficiency and the wheel components and ball bearing to quickly depreciate.
  • • Replace worn tires straight off and avoid installing smooth tires. The best time to replace the tire is when its tread depth reaches the maximum limit specified on it.
  • • It is recommended that the air pressure of the spare tire be checked every so often.
  • • Avoid installing wheel rings bigger than the standard size recommended by the manufacturer.
  • • Keep the tires balanced. The aligned and balanced wheels would impose equal weights on the tires, causing the wheels to rotate easily. An imbalanced tire would cause the car to “vibrate” and/or “hop”. Prior to mounting the new tires, you are supposed to make sure to keep the tires balanced.
  • • Make sure that the position of the car’s wheels with respect to the road surface is at a standard angle. When their position is unusual, the rotation would decrease in quality and also the tires would wear down asymmetrically which results in the reduction of tire life. Consult a skilled mechanic in order to align the wheels on a car.


Warranties are voided when the tire experiences the following conditions:

1.Driving at a time when the tires have higher or lower air pressure than the normal.(.
2. Collision of tire with obstacle.
3. Passing over a sharp, razor-edged or hot thing.
4. Unaligned steering wheel or suspension system of the automobile.
5. Exposure to oil, grease, and gasoline.
6.Carrying a heavier load than the standard capacity of the tire, or driving at a higher speed than the normal one which is inscribed on the sidewall of the tire.