Closed Shoulder Drive Tyres for Commercial Trucks

What Is a Closed Shoulder Tread Pattern?

A closed shoulder tread pattern is a drive tyre design where a continuous rubber rib runs along both outer edges of the tread surface, connecting the outermost tread blocks in an unbroken band. Unlike an open shoulder design where the lateral grooves extend to the tyre edge, the closed shoulder keeps the shoulder area solid. This creates a lower void ratio — the percentage of the tread surface occupied by grooves — which fundamentally shifts tyre performance in favour of highway stability, reduced road noise, and longer tread life.

The continuous shoulder rib serves multiple engineering purposes. First, it distributes ground pressure more evenly across the contact patch, preventing the concentrated stress points that cause uneven wear in separated shoulder blocks. Second, it reduces the volume of air passing through the tread grooves at highway speeds, which directly lowers road noise for greater driver comfort during long-haul operations. Third, it minimises the aerodynamic drag created by groove openings at the tyre edge, contributing to lower rolling resistance and measurable fuel savings over sustained highway kilometres.

From a fleet management perspective, closed shoulder drive tyres represent the optimal specification for any operation where highway mileage dominates the duty cycle. The design philosophy prioritises the metrics that matter most to long-haul profitability: cost per kilometre, fuel consumption per loaded kilometre, and predictable tread wear that allows planned tyre rotations and retreading cycles. The HS88, the company's best-selling drive tyre, exemplifies this approach with its hexagonal centre block design combined with a closed shoulder that has earned the trust of line-haul fleets across Antigua and Barbuda.

When To Use Closed Shoulder Drive Tyres

Closed shoulder drive tyres are designed for duty cycles where the truck spends the great majority of its operating time on sealed, well-maintained road surfaces. The continuous shoulder design trades some off-road capability for measurable advantages in fuel savings, tread life, noise reduction, and highway stability. These are the primary applications where closed shoulder tyres deliver their maximum value:

Long-Haul Highway Transport

Long-haul transport operations covering between 160,000 and 240,000 kilometres of highway per year represent the ideal application for closed shoulder drive tyres. These trucks operate primarily on sealed roads where surfaces are smooth, consistent, and well maintained. The reduced rolling resistance of a closed shoulder pattern accumulates over hundreds of thousands of kilometres, delivering fuel savings that directly impact profitability. Even wear characteristics mean tyres reach their minimum depth evenly across the full tread width, maximising the kilometres extracted from each tyre before it is removed for retreading. The 29/32 tread depth of the Hanksugi HS88 provides the extended mileage that long-haul operators demand.

Main Road Freight and Dedicated Lane Operations

Dedicated lane operations running the same routes repeatedly on main roads benefit enormously from closed shoulder drive tyres. Predictable wear patterns allow fleet managers to plan rotations and tyre replacements with great precision, reducing unplanned downtime and roadside service calls. Lower noise levels also improve driver satisfaction and reduce fatigue on routes that may involve 10 to 11 hours of continuous highway driving. For fleets operating with team drivers where the truck remains on the road around the clock, closed shoulder tyres are the only sensible specification for the drive axle.

High-Mileage and Fuel-Sensitive Operations

Any fleet that tracks and manages fuel cost as a primary KPI should specify closed shoulder drive tyres for highway-dominated routes. The difference in rolling resistance between closed and open shoulder designs translates into measurable fuel savings over the life of a tyre. For fleets seeking to maximise fuel efficiency, closed shoulder drive tyres contribute to lower rolling resistance scores that efficiency programmes reward. The Hanksugi HS88's uniform carbon dispersion compound technology optimises fuel efficiency further by controlling the molecular distribution of carbon within the rubber to minimise energy loss through heat generation.

Fleet Management by Cost per Kilometre

Modern fleet management focuses on total cost of ownership rather than purchase price alone. Closed shoulder drive tyres such as the HS88 deliver their value through extended tread life, lower fuel consumption, predictable wear patterns that support retreading programmes, and durable casings warranted for 3 retreads. When cost per kilometre is calculated including original tread life, fuel savings, and retreading value, closed shoulder drive tyres consistently outperform alternatives on highway-dominated routes. Use our cost calculator to model the savings for your specific operation.

Key Specifications for Comparing Closed Shoulder Drive Tyres

When evaluating closed shoulder drive tyres for your fleet, three technical specifications have the greatest impact on total cost of ownership and operational performance. Understanding these metrics helps you select the tyre that will offer the best return for your specific highway application.

Tread Depth

Tread depth in closed shoulder drive tyres directly determines how many highway kilometres the tyre will deliver before reaching the legal minimum depth. Deeper treads provide more rubber to wear through, extending the service interval between tyre changes. However, a deeper tread also slightly increases rolling resistance because more rubber is flexing with each revolution. The engineering challenge is to balance tread depth against rolling resistance to optimise total cost per kilometre. The Hanksugi HS88 offers 29/32 tread depth — among the deepest in its category — because Hanksugi's uniform carbon dispersion compound mitigates the rolling resistance penalty that normally accompanies deep treads. This means the HS88 delivers maximum mileage without the fuel efficiency compromise imposed by cheaper deep-tread alternatives.

Rolling Resistance

Rolling resistance is the energy lost when a tyre deforms and recovers with each revolution. On a long-haul truck covering 190,000 kilometres per year, the rolling resistance of the drive tyre directly affects fuel consumption. Closed shoulder tyres inherently have lower rolling resistance than open shoulder alternatives because the continuous shoulder rib creates a more uniform contact patch with less flex at the tread edges. Within the closed shoulder category, rolling resistance varies according to compound formulation, casing construction, and tread geometry. The HS88's uniform carbon dispersion technology controls the molecular distribution of carbon within the rubber compound, reducing hysteresis (energy lost as heat) and delivering measurable fuel savings over the life of the tyre.

Fuel Efficiency

Fuel represents approximately 30 to 40 percent of the total operating cost of a long-haul transport operation. Drive tyres are the highest tyre-related factor in fuel consumption because they transmit engine power to the road surface. Closed shoulder drive tyres reduce fuel consumption through multiple mechanisms: lower rolling resistance from the continuous shoulder rib, reduced aerodynamic drag from fewer groove openings, and optimised rubber compounds that minimise heat generation. For a fleet that tracks cost per kilometre on routes between Saint John's and English Harbour or across the island, even a 2 percent improvement in fuel efficiency from a better drive tyre choice represents meaningful annual savings. When specifying closed shoulder drive tyres, ask your tyre supplier for rolling resistance data and compare it against your current tyres to model the fuel savings potential.

Hanksugi Closed Shoulder Drive Tyre Models

Hanksugi manufactures closed shoulder drive tyres serving different markets and operating conditions. All feature the continuous shoulder rib design that defines the closed shoulder category, combined with aggressive centre tread patterns that maintain drive axle traction on sealed surfaces.

Antigua and Barbuda

HS68

Closed Shoulder Regional / Long-Haul

Stone protection with wide tread design and four decoupling grooves. The closed shoulder architecture offers stability and even wear for regional and long-haul operations in Antigua and Barbuda.

• Tread Depth: 20.6 mm
• Sizes: 11R22.5, 295/75R22.5, 11R24.5, 285/75R24.5
• Ply Rating: 14–16 PR
• Stone protection system
• Four decoupling grooves

See HS68 Details

FARAON

HS78 FARAON

Closed Shoulder Drive

The FARAON features a patented deep tread pattern with optimised ground pressure distribution for even wear and very high mileage. Designed for professional fleets that demand uncompromising performance.

• Tread Depth: 23 mm
• Size: 295/75R22.5
• Ply Rating: 16 PR
• FARAON pattern technology
• Optimised ground pressure distribution

See HS78 FARAON Details

HS88: The Preferred Closed Shoulder Drive Tyre in Antigua and Barbuda

The Hanksugi HS88 has earned its position as the most popular drive tyre in the Hanksugi line through consistent performance across countless fleet operations. What sets the HS88 apart from competing closed shoulder drive tyres is the combination of its hexagonal centre block design with its closed shoulder architecture.

The hexagonal tread blocks interlock to minimise block movement under load. When tread blocks shift and flex independently, they create uneven wear patterns that shorten tyre life and compromise handling. The HS88's interlocking hexagonal geometry distributes ground pressure evenly across the entire contact patch, preventing heel-and-toe wear, centre wear, and shoulder wear that affect tyres with less sophisticated tread architectures. This uniform wear distribution means the HS88 reaches minimum tread depth evenly across its full width, extracting maximum mileage from each tyre.

The closed shoulder complements the centre block design by providing the directional stability that long-haul operations demand. At sustained highway speeds, the continuous shoulder rib maintains consistent contact with the road surface, preventing lateral movement that causes erratic handling and premature shoulder wear. Combined with Hanksugi's uniform carbon dispersion compound technology — which controls the molecular distribution of carbon within the rubber to lower rolling resistance and extend tread life — the HS88 delivers a complete package that fleet managers measure in cost per kilometre.

Closed Shoulder vs. Open Shoulder Drive Tyres

Understanding the trade-offs between closed shoulder and open shoulder drive tyres ensures you specify the right tyre for each route and application in your fleet. Neither design is universally superior; each excels in its intended operating environment. For a full analysis, read our detailed comparison guide.

Available Sizes — Hanksugi Closed Shoulder Drive Tyres

The table below lists every available size in the Hanksugi closed shoulder drive tyre range. Click any size to see detailed specifications, load ratings, and compatible models on the dedicated size page.

Need help selecting the right closed shoulder drive tyre for your operation? Use our tyre cost calculator to compare cost per kilometre, or contact our team for a fleet consultation.