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The Science Behind Yokohama Tire’s GEOLANDAR A/T4® and Its Severe Snow Service Rating

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The Science Behind Yokohama Tire’s GEOLANDAR A/T4® and Its Severe Snow Service Rating

The Kia Sportage is a year-round SUV. But winter doesn’t care what you drive. When roads get slick, ice builds up, and snow piles high, your tires matter more than anything.

Yokohama Tire’s GEOLANDAR A/T4® is Severe Snow Service-rated, meaning it carries the Three-Peak Mountain Snowflake (3PMSF) symbol. This isn’t just a label. It’s a tested indicator of winter traction that meets strict industry standards.

Here’s how it works.

What Does 3PMSF Mean?

The 3PMSF symbol shows that a tire has passed official snow-traction testing. Unlike basic M+S (mud and snow) markings, this test is performance-based.

The A/T4 meets the requirements set by the U.S. Tire Manufacturers Association and international standards. It must perform at least 10% better in snow traction than a baseline all-season tire.

How the A/T4 Achieves It

The GEOLANDAR A/T4 uses specific winter-ready features:

  • EDGETEC grooves for biting edges in snow
  • A tread compound that stays flexible in cold
  • A pattern that evacuates packed snow quickly

These elements work together to maintain grip, especially during acceleration and braking.

Why It Matters for Sportage Drivers

The Kia Sportage is often used for daily driving, even in tough winter months. Severe Snow Service means the A/T4 is ready for:

  • Black ice mornings
  • Slushy afternoon commutes
  • Unplowed weekend drives

All while staying comfortable and quiet on dry roads.

Available in the Right Sizes

With fitments from 15–22 inches, the A/T4 is a match for most Sportage trims. It delivers winter performance without needing dedicated snow tires in many regions.

Tested for Winter. Trusted Everywhere.

The 3PMSF symbol isn’t a bonus. It’s proof. The GEOLANDAR A/T4 gives you real traction when conditions are at their worst.

Visit your local dealer to learn more.

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