
Snow tires should not be installed on only two drive wheels. The principles and explanations of snow tires are as follows: Principles of Snow Tires: The tread that contacts the road surface uses a special silica-based compound to ensure the tire remains exceptionally soft even at extremely low temperatures, providing excellent grip on ice. The tread pattern typically employs a cross-Z siping technology, which not only enhances braking performance on snow and ice, shortens braking distances, but also delivers ideal traction. Explanation of Snow Tires: These tires are designed for use in snowy conditions, featuring rubber with metal studs to increase grip. In colder regions prone to snow accumulation, such as Russia, people use these tires during winter.

I remember last winter, to save money, I only replaced the two front tires with snow tires, thinking that having traction on the drive wheels would be enough. But during a heavy snowfall, when I was turning, the rear wheels suddenly lost grip, and the car almost hit the roadside railing. I was terrified. After stopping, I realized the handling was very unbalanced, with insufficient rear-wheel traction during braking, and the tires wore out faster. The mechanic told me I was playing with my life—having different friction levels between front and rear wheels increases the risk of losing control. He said it's safer to replace all four tires in snowy conditions and not to skimp on that expense, as an accident is no joke.

At first, I thought replacing only the drive wheels would save some money, since they're mainly used for starting off. But after a month of driving, I noticed the braking distance had significantly increased. Once on an icy road, I almost rear-ended the car in front, and the sound of the tires locking up was nerve-wracking. Later, I ended up spending even more money on suspension repairs—totally not worth it. The key to winter tires lies in overall balance; replacing only part of them reduces vehicle stability, so the ideal is to replace all four. Now, I always replace all four tires properly to avoid bigger troubles from trying to save money.

Tire grip must be consistent front and rear for stability. Replacing only the drive wheels is fine for acceleration, but when cornering or braking hard, non-drive wheels can easily skid on snow, causing the car's center of gravity to shift and increasing accident risk. Wear also becomes uneven, requiring frequent tire changes. It's best to switch to snow tires on all four wheels to maintain synchronized performance, ensuring much better safety and handling.


