Will changing tires from 65 to 70 make them more stable?
2 Answers
Tires changing from 65 to 70 will not be more stable. Reasons for instability: The aspect ratios are different, one being 65 and the other 70. The aspect ratio is related to the section height and section width. If the section width is the same, then the section height will also differ. Effects after changing tires: It will affect the performance of the tires, driving feel, and fuel consumption. Automobile tires: They are one of the important components of a car, directly in contact with the road surface. Together with the car suspension, they mitigate the impact during driving, ensuring good ride comfort and smoothness; ensuring good adhesion between the wheels and the road surface; improving the car's traction, braking, and off-road capability; and bearing the weight of the car.
I've changed tire sizes several times, including switching from 65 to 70 series. The numbers in tire sizes represent the percentage of sidewall height to tire width. Changing from 65 to 70 means thicker and softer sidewalls. This makes your ride more comfortable on bumpy roads with reduced vibrations, but handling worsens. During turns, the increased sidewall deformation causes noticeable body sway, making the car feel less stable. I recommend this change only if you frequently drive on rough roads or prioritize comfort. For daily highway driving, sticking with the factory 65 series is more ideal. Also note that changing tire size may affect your speedometer readings and fuel consumption, so check wheel rim compatibility. Overall, if stability is your priority, avoid 70 series tires—they're better for improving comfort rather than stability.
