Winter tire tread depth and maintenance for safe driving

Winter tires require a minimum tread depth of 4 millimeters for optimal safety, exceeding the legal minimum. This recommendation is crucial for better grip on wet and snowy roads, with the better-treaded tires advised for the rear axle to maintain stability. Drivers should also consider tire age, check for visible damage, ensure tire pressure monitoring systems are functional, and properly tighten lug nuts.