
Grandtrek AT5: Master Every Terrain - 20"
144,00 € - 212,00 €
CLICK SELECT TO CHOOSE YOUR TYRE SIZE
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Key Markings and Features Explained
- XL (Extra Load): Signifies a reinforced structure to handle heavier vehicle weights.
- FSL (Flange Shield Logic): Rim protection feature that helps safeguard alloy wheels.
- M+S (Mud and Snow): All sizes carry this designation, indicating the tread pattern is capable of performing in light snow and mud conditions. The AT5 is primarily a summer/all-terrain compound.
- All-Terrain Durability: Built with a tough sidewall and robust tread pattern for resistance against cuts and chips when used off-road.
- On-Road / Off-Road Suitability Split: 60% On-Road | 40% Off-Road: This tyre provides a good balance between confident on-road comfort and handling, and sufficient durability and traction for occasional off-road use.
Popular Compatible Vehicles
The 20" Dunlop Grandtrek AT5 range is well-suited for a variety of traditional 4x4 vehicles and modern premium SUVs in the Irish market:
- Mercedes-Benz G-Class / GLE: Compatible with the 275/50 R20 size.
- Toyota Land Cruiser: Can utilize the 285/50 R20 size.
- Volkswagen Touareg / Porsche Cayenne: Compatible with the 275/50 R20 size options.
- Land Rover Defender: Compatible with the robust 20" options.
- Nissan Navara / Ford Ranger: Higher trim levels of these pickup trucks can use the 275/60 R20 size.
Summer tyres are most common in Ireland, offering peak fuel efficiency mileage and grip when temperatures stay above 7°C. However, they are not the official standard for winter safety. Motorists must show caution in cold conditions; below 7°C, summer rubber hardens, significantly compromising grip and wet braking performance on cold, saturated Irish roads.
All-Season tyres are the superior "fit-and-forget" solution for Ireland's wet, temperate climate. Specifically engineered to remain flexible in the cold, they provide shorter stopping distances on near-freezing, rain-soaked surfaces and carry the 3PMSF certification for frost and light snow. They offer total year-round peace of mind without the hassle of seasonal swaps.
Load Rating: Maximum Weight Capacity Explained
The load index is a numerical code representing the maximum weight in kgs that a single tyre can safely carry. To ensure safety, the combined capacity of all four tyres must exceed the vehicle’s total weight when fully loaded.
Speed Rating: Maximum Velocity Explained
Represented by a letter, the speed rating indicates the maximum kph a tyre can maintain over a prolonged period. Higher speed ratings are engineered to handle the heat and stresses generated at faster speeds more effectively.
Quick Reference Guide
- Check your requirements: You can find the specific requirements for your vehicle on the tyre information plate (usually located on the driver-side door pillar) or in the owner's manual.
- Replacement rule: It is vital never to fit a tyre with a lower load index or speed rating than those recommended by the manufacturer.
- Common Ratings: Standard ratings include T (190 kph), H (210 kph), and V (240 kph). You can view a full conversion table below..


The Dunlop Grandtrek AT5 is a durable and versatile all-terrain tyre designed for 4x4s, SUVs, and pickup trucks, offering balanced performance on both paved and unpaved surfaces in the Irish market. It is primarily a summer/all-terrain compound.
Available 20" Sizes and Markings
- 275, 50, 20, 113V, XL
- 275, 60, 20, 115T, FSL
- 285, 50, 20, 116H, XL






