
There is an impact. Due to different specifications and pressure ratings, they cannot be interchanged. 175: The tire width is 175 millimeters; 65: Known as the tire's aspect ratio, meaning the ratio of the sidewall height to the tire width is 65%; R: Radial tire, 14: The rim diameter is 14 inches. 165: The tire width is 175 millimeters; 70: Known as the tire's aspect ratio, meaning the ratio of the sidewall height to the tire width is 70%; R: Radial tire, 14: The rim diameter is 14 inches. Additional information: 1. Wheel modification: Wheel modification is often the first step for many people. Not only does it significantly enhance the appearance of the vehicle, but it also directly improves certain aspects of the car's performance. 2. Wheel deformation: The most direct effect of wheel deformation is causing your vehicle to pull to one side. This may not be noticeable at low speeds, but at high speeds or when accelerating, even a slight deviation can be magnified, affecting safety.

As a veteran driver with 20 years of experience, I must say that 175/65R14 and 175/70R14 tires cannot be swapped casually—it's a major safety issue. Those numbers 65 and 70 represent the tire sidewall height ratio, with the 70 being significantly taller—about over 1 cm, increasing the overall wheel diameter slightly. After installation, the speedometer will be inaccurate—for example, showing 70 km/h when you're actually close to 75 km/h. Getting caught speeding is the least of your worries; braking distances will lengthen, and the car may skid more easily in wet conditions. The suspension also can't handle this change, making steering difficult on bumpy roads and increasing the risk of fishtailing during turns. I once saw a neighbor make this swap, and their ABS even failed, costing them several times more in repairs than a new set of tires would have. Remember, the vehicle manual's specified size is based on comprehensive testing—altering it is like gambling with your life. If you absolutely must make a temporary change, check whether the diameter difference is within 3% and have it inspected by a professional shop, but sticking to the original size is always best.

Hey, as a car enthusiast, let me share my thoughts: swapping 175/65R14 for 175/70R14? Not recommended! The 70 series has thicker and taller sidewalls, making the overall tire softer with slightly better bump absorption, potentially offering a more comfortable ride. However, the 65 series is lower and stiffer, providing precise handling and quicker response. The issue lies in the significant change in vehicle geometry after the swap—the diameter difference is about 1.2%, leading to a speedometer deviation of 3-4 km/h. Additionally, the suspension support weakens, making the car feel heavier and less responsive during acceleration; braking distance increases; and fuel consumption might also rise. On curves or highways, these minor changes amplify risks. I’ve tried modifying cars on the track, and mismatched sizes severely affect balance, with the ABS light constantly flashing. My advice: stick to the same specifications for replacements—don’t risk it for minor savings.

As a seasoned mechanic with over a decade of experience, here's some advice: don't casually switch between 175/65R14 and 175/70R14 tires. The numbers 65 and 70 represent the aspect ratio, with 70 having a taller sidewall and larger diameter. After swapping, the tire's rolling circumference changes, causing inaccurate odometer readings; insufficient suspension support leads to bump damage to chassis components; and ABS sensor false alarms become frequent, degrading braking safety. In one case, a client switched to 70 series just to save money, only to end up with vehicle drift and excessive noise. It's also legally non-compliant and risks fines. Always buy new tires matching the original specifications—it saves time and ensures safety.


