Part 1: Self Propelled Modular Transporters (SPMTs) - An Overview
I. What is SPMT Trailer?
SPMT, or Self-Propelled Modular Transporter, is a vehicle used to move very large and heavy objects that are too big for standard trucks. These transporters are essentially platforms with multiple axles and wheels, capable of carrying enormous loads. They are commonly used in industries like power, oil, plant construction, and civil projects.
II. What is MSPE Trailer?
MSPE: Self-Propelled Electronic Modules. An MSPE Trailer is essentially a single, independent, self-powered axle module that can be combined with many other identical modules to create a massive transport platform. It is the fundamental building block of a Self-Propelled Modular Transporter (SPMT).
- An MSPE is a single, intelligent "Lego brick" with its own wheels, engine, and steering.
- An SPMT is the entire structure you build by connecting dozens of these "Lego bricks" together.
III. Key Features of SPMT Trailer:
Self-Propelled:
Unlike traditional trailers, SPMTs have their own power source (usually a power pack unit) and can move themselves without needing a separate tractor.Modular Design:
They are built from multiple modules that can be coupled together to create a platform of the desired size and capacity.Multi-Axle Steering:
Each axle line is individually controllable, allowing for precise steering, even in tight spaces and around obstacles.High Load Capacity:
Cometto offers up to 70t per axle line on its MSPE self-propelled electronic modules.
SPMTs can handle loads of immense weight, making them ideal for transporting large structures and equipment.Versatility:
They can move in various directions, including sideways (skidding) and even rotate 360 degrees.
IV. Applications of SPMT Trailer
SPMTs are used for transporting massive objects, such as large bridge sections, oil refining equipment, cranes, motors, spacecraft and other objects that are too big or heavy for trucks.
- Heavy Construction: Transporting bridge sections, pre-fabricated buildings, and other large components.
- Oil and Gas: Moving modules for refineries, offshore platforms, and other large industrial equipment.
- Power Plants: Transporting large machinery, turbines, and other components.
- Shipbuilding: Moving large sections of ships and other marine structures.
- Aerospace: Moving aircraft components and complete aircraft.
- Civil Projects: Handling large tunnel segments, bridge sections, and other heavy infrastructure.
V. How MSPE Trailers Work Together to Form an SPMT？
When multiple MSPE trailers are connected and synchronized via the central control system, they cease to be individual units and function as a single, intelligent machine—the SPMT.
Control: An operator uses a remote control or a cabin to direct the entire "train."
Load Distribution: The computer system ensures that the immense weight of the cargo is distributed evenly across all the modules and their hundreds of tires.
Synchronization: All driving, steering, and lifting actions are perfectly synchronized, so the platform moves as one solid, stable entity.
In summary, SPMTs are powerful and versatile machines that play a crucial role in moving extremely heavy and oversized loads, enabling large-scale construction and industrial projects to be completed efficiently and safely.
VI. Famous Manufacturers of SPMT Trailer in the World
VII. China SPMT Trailer Manufacturers
VIII. Chinese SPMT Manufacturers: Competitive Advantages and Development Prospects
Chinese self propelled modular transporter manufacturers have emerged as formidable global competitors, primarily characterized by the following advantages:
- High Cost-Effectiveness:Chinese-manufactured SPMTs typically offer significantly more competitive pricing compared to their European-brand counterparts. This price advantage remains their most compelling market entry and growth driver.
- Rapid Technological Catch-Up: Through a proven strategy of technology introduction, assimilation, and independent innovation, leading Chinese manufacturers have seen their technical capabilities advance rapidly. Their technology is now very close to the world's top tier, capable of meeting the demands of the vast majority of super-sized and ultra-heavy transport projects.
- Growing After-Sales Network:As their global business expands, leading companies like XCMG and CIMCare continuously improving their worldwide service and support networks.
- Strong Domestic Market Support: China's massive domestic infrastructure program—encompassing nuclear power, wind farm construction, large-scale chemical plants, and major bridge projects—provides these manufacturers with an extensive testing ground and application environment. This constant stream of complex domestic projects allows for rapid technological iteration and maturation.
If you are evaluating China self propelled modular transporter manufacturers, XCMG and CIMC are the undisputed industry benchmarks. They represent the highest level of Chinese achievement in product quality, technological capability, and project experience. They have demonstrably proven their ability to compete on the global stage with established international top brands.
The development trajectory suggests that Chinese players will continue to close the technological gap while leveraging their cost advantages. Their focus will likely be on enhancing their global service capabilities and software control systems to solidify their position as leading global contenders, not just low-cost alternatives.
Part 2: SPMT Tires - The Critical Interface
The tires on an SPMT are a critical component, directly bearing hundreds or thousands of tons and enabling precise steering maneuvers. Unlike automotive tires, the SPMT tire market is a highly specialized niche dominated by a few key manufacturers. The focus is exclusively on Tubeless, Solid, Press-On Tires for their unparalleled load-bearing capacity and safety.
I. SPMT Trailer Tire Type
SPMTs almost exclusively use Industrial Solid Tires, Pneumatic Bias Tires, and All Steel Radial Trail Tires on common vehicles.
1. Industrial Solid SPMT Tires
Construction: Made from a solid, dense block of rubber compound, often reinforced with steel or other materials. They are pressed onto a solid or segmented rim.
Extreme Load-Bearing Capacity: Made from high-density, high-hardness rubber, solid tires cannot puncture and can carry loads of dozens of tons per tire—something pneumatic tires cannot achieve.
Primary choice for heavy-duty SPMT applications
Extreme load capacity (dozens of tons per tire)
Puncture-proof and maintenance-free
Ideal for mega-loads in controlled environments
Common sizes: 355/50-15, 355/65-15, 355/50-20
2. Industrial Pneumatic Bias SPMT Tires
Construction: Pneumatic Bias SPMT Tires with a classic bias-ply construction， with Tubeless and or Tube-Type.
Tread Pattern: The tread is usually shallow or even smooth. This is because SPMTs operate at low speeds on prepared, hard surfaces (like ports and factory grounds), where flat, even load distribution is more important than deep-tread grip.
Provides better cushioning and shock absorption
Lower initial cost but higher maintenance
Suitable for lighter loads and rougher surfaces
Sizes: 355/65-15, 33.5x11.75-15, 7.50-15
3. All Steel Radial Trailer Tires
Features steel cord construction for durability
Lower rolling resistance and heat buildup
Excellent for highway use and longer distances
Combines durability with fuel efficiency
Sizes: 355/65R15, 9.5R17.5, 215/75R17.5, 225/80R17.5, 225/90R17.5, 235/75R17.5, 245/70R17.5, 245/70R19.5, 255/70R22.5, 265/70R19.5, 285/70R19.5, etc.
Conclusion: Key Selection Criteria
Solid Tires: Maximum load capacity and reliability
Bias Pneumatic Tires: Cost-effective with good cushioning
Steel Radial Tires: Balanced performance for highway transportation
Feature | Industrial Solid Tires | Industrial Pneumatic Bias Tires | All Steel Radial Tires |
Primary Use | Ultra-Heavy SPMTs, Mega-Loads | Heavy-duty trailers, industrial equipment | Highway trailers, heavy-duty trucking |
Load Capacity | Extremely High | Moderate to High | High |
Ride Comfort | Very Stiff / No Cushioning | Good (Air Cushion) | Firm & Stable |
Maintenance | Very Low | High (Pressure, Punctures) | Moderate |
Cost | High Initial Cost | Low Initial Cost | Low Initial Cost |
Key Advantage | Maximum Reliability & Load | Cost & Cushioning | Durability & Efficiency for Highway Use |
II. Leading Brands & Their Primary SPMT Tire Models
1. Continental 355/65-15 24PR N TL IC 40 EXTRA DEEPfor SCHEUERLE SPMT (PLATFORM TRAILER)
2. Dunlop 355/65-15 aircraft tires for Cometto 40ton 48ton self-propelled electronic modular trailers (MSPE)
3. Forlander Brand 355/65-15 28PR SPMT Tires
This Forlander 355/65-15 28PR SPMT Tires are designed for heavy-duty Self-Propelled Modular Transporters (SPMT). With the feature of its high Load capacity and strong sidewall, Forlander SPMT Tires can be used in extreme duty working condition. Full range for Morello, Mammoet, Avanti, SCHEUERLE, Goldhofer modular trailers etc.
Application: Self-Propelled Modular Transporter (SPMT)
Ply rating: Commonly 28PR, indicating a very high load capacity and durability.
Benefits
- High loading capability
- High tire stability
- High damage resistance and excellent traction
4. Michelin XTE2+ 215/75 R17.5 for Goldhofer modular trailers, maximised load-carrying capacity combined with safety
5. Forlander 215/75R17.5 18PR FA388 for Goldhofer modular trailers
6. Dunlop 5x11.25-25 26PR for MSPE EVO series with its 60t and 70t per axle line has the biggest payload on the market.
7. Forlander Brand SIT01 Port Tires 33.5×11.25-15 28PR 32 PR PRO TECH Tubeless Tyres
33.5×11.25-15 28PR with a single tire load capacity of 12.5 tons, 32PR with tire load capacity of 17.5 tons
Features:
- Cross ply construction
- Stiff sidewall and wide, flat tread
- Thick tread depth and lugged tread pattern
8. Double Coin tires RT500 9.5R17.550R15 is an all steel special purpose trailer tire designed for enhanced durability and long tread life. Its symmetrical tread design delivers high stability and traction.
9. Michelin
TII SCHEUERLE builds modular K25 combination with specific load securing features, equipped with MICHELIN tires, was tested under adverse conditions and met high-performance expectations.
A real challenge for man and machine: The 20-axle lines SCHEUERLE K25 combination acquired by August Alborn faced the ultimate stress test – a staggering 450-ton test load!
Tyre Size: 285/70R19.5 with max load 23 ton
10. Goodyear 245/70R17.52 KMAX T for Goldhofer THP/SL-SQ
11. Forlander FR966 maximised load-carrying capacity combined with safety with sizes complete tire range.
Developed by Forlander S MULTI Technology
- Casing reinforced for higher load capacities or under more demanding conditions results in enhanced fuel efficiency and greater casing mileage potential.
- Evolving wider tread designs provide additional grip and enhanced mobility over the life of the tire.
- The full-width elastic protector ply helps protect the working plies from bruising and penetrations, minimizing downtime.
Tyre Size: 9.5R17.5 18PR, 215/75R17.5 18PR, 225/80R17.5 18PR, 225/90R17.5 16PR, 235/75R17.5 18PR, 245/70R17.5 16/18PR, 245/70R19.5 16PR, 255/70R22.5 16PR, 265/70R19.5 18PR, 285/70 R 19.5, 275/70R22.5 18PR, 275/80R22.5 18PR
The Forlander FR966 is an all steel special purpose trailer tire designed for enhanced durability and long tread life. Its symmetrical tread design delivers high stability and traction.
Forlander technology and innovation designed to support your business, reducing your costs while respecting the environment.
Summary
Self propelled modular transporters(SPMTs) represent the pinnacle of modern heavy industrial logistics. Through their core technologies of modular design, all-wheel hydraulic drive/steering, and computer-synchronized control, they solve the global challenge of moving super-heavy and oversized cargo. The solid tires fitted to these vehicles are the silent but vital foundation of this powerful system. Their unparalleled load capacity, safety, and reliability ensure these "steel giants" can move thousands of tons of cargo with stability and precision.
