According to these recommendations, the tire of the vehicle should be replaced.
The original tire must also be the same as the outer diameter of the previous tire on the tire to be replaced, even when changing the rim. The reason for not changing these dimensions is made by calculating the distance traveled in one turn when preparing the technical dimensions of the vehicle. If the new tire breaks this rule, the desired efficiency cannot be obtained from the vehicle.
One of the most important features to be considered when buying an oath is ken Offset..
Offset is defined as the inside or outside position of the rim. This information must be written on the safety certificate of the rim and the car. It is essential to comply with the specified offset value. Problems caused by non-compliance, the wheel rims more or more inside or out of the tire, problems that may occur during braking and cornering, problems that may occur with the wheel rubbing against the fender when the vehicle is loaded or when speed increases. That is, the rim and the tire must be on the same cross-section.
What to consider when enlarging the rim
When your car rim is 15 inches and removing 18, the sidewall height of the tire you will install will decrease, the cornering performance will increase but the base width of the tire will increase. Because the larger the rim, the larger the cross-sectional width of the tire. As a result, the desired comfort cannot be obtained from the tire. The impact resistance of the tire will be reduced, especially where the road, ground is uneven and distorted. When the sidewall section is 65, when it is reduced to 45, it will cause damage to the sidewall of the tire.