Will changing tires from 65 to 70 make them more stable?
4 Answers
Tires changing from 65 to 70 will not be more stable. Here are the specific details about tire specifications: 1. Specification model representation: Tires are important components of a car, and there are many specifications and models of tires, with different specifications and models suitable for different types of vehicles. The specification model identification is usually on the side of the tire, represented by a series of alphanumeric characters, corresponding to the tire's tread width, aspect ratio, type, rim size, load index, and speed rating. 2. Speed rating: According to the different maximum speeds they can withstand, tire speed ratings can be divided into different grades from A to Z, with grade A further divided into eight different grades from A1 to A8. The further back the letter representing the tire speed rating is, the better the tire performance.
As someone who has taught safe driving at a driving school for many years, I believe changing the tire aspect ratio from 65 to 70 can indeed provide some stability advantages on certain roads. Especially when driving on bumpy roads daily, the higher tire sidewall offers better shock absorption, making the car less prone to shaking and feeling more stable. However, be cautious—tires with higher sidewalls may have slower feedback during sharp turns or high-speed driving, reducing handling performance and increasing risks during emergency maneuvers. Additionally, don't forget that the diameter change can mess with your speedometer and odometer, and insurance might also become an issue. I recommend testing it first, but ensure compatibility with the rim size—don’t sacrifice safety for comfort. After changing, check tire pressure and balance, or the stability improvement will be limited.
As a racing enthusiast, I often tinker with tires. Switching to 70-series aspect ratio tires can be somewhat helpful if you're after a smoother feel on well-paved roads. The taller sidewalls help absorb bumps, making the ride more fluid. But stability? Honestly, performance takes a hit—cornering grip weakens, and tire deformation increases during acceleration and braking, making it easier to drift. Overall, there's only a slight improvement in straight-line driving. I've tried similar modifications, and they work okay on smooth highways but feel unstable on mountain roads or in wet conditions. I'd recommend considering other upgrades rather than relying solely on changing the aspect ratio for stability—it's about matching the overall setup.
As an ordinary office worker, I drive a family car to commute, and after switching to 65 to 70 aspect ratio tires, I clearly feel much more comfortable. The tires are soft with strong shock absorption, making the ride much smoother when driving over bumpy roads, with significantly less jolting. In terms of stability, driving slowly in the city feels more reassuring, with less swaying. However, at high speeds, the difference is minimal, and it even feels slightly floaty in strong winds. Maintenance is straightforward—don’t expect major improvements, it’s just a daily comfort upgrade.
