Multi-Axle TPMS for Heavy Transport Vehicles
A 160-wheel bridge girder transporter cannot be checked by walking around it. Long chassis also block the radio path, so the engineering question is not sensor count but repeater planning. We have instrumented a 160-wheel carrier in production and the largest single machine we have done carries 224 wheels — 28 axles × 8.
Why long vehicles are a different problem
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01
Radio, not capacity, is the limit
One receiver handles up to 256 wheel positions, but a long steel chassis blocks 433 MHz. Repeaters are placed by geometry along the machine — the 160-wheel carrier uses 12.
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02
Walk-around checks do not scale
Nobody inspects 160 tires before a move. Alarms on the cab screen replace the walk-around rather than adding to it.
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03
A stopped move stops a project
A tyre failure on a beam carrier is not a roadside repair; it is an infrastructure project standing still. The cost of a false alarm is far lower than the cost of a missed one.
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04
Two displays on one machine
Long carriers often have more than one driving position. Two receivers with two 7-inch displays keep the data where the operator is.
Delivered configurations
Both of these are in service, not proposals.
| Machine | Typical configuration | Notes |
|---|---|---|
| 160-wheel beam carrier | 2 receivers + 12 repeaters + 160 sensors | 2 × 7" cab displays; every wheel's pressure and temperature; 10 machines delivered. |
| 224-wheel machine (28 axles × 8) | Multi-receiver, repeater chain along the chassis | The largest single machine we have instrumented. Proves the 256-position ceiling is real. |
| Typical SPMT / trailer | 1–2 receivers + repeaters as required | Sensor count follows the axle plan; we size it from your drawing. |
Machines we have instrumented
Real installations, not concepts. Each link goes to the field record.
Multi-axle TPMS — frequently asked questions
How many wheels can a TPMS monitor on one vehicle?
Up to 256 wheel positions per receiver, and more than one receiver can be used on a single machine. We have instrumented a 160-wheel beam carrier in production and a 224-wheel machine — 28 axles × 8.
How do repeaters get placed on a long chassis?
By geometry, not by rule of thumb. Steel structure, axle spacing and the position of the receiver decide where the radio path breaks. The 160-wheel carrier uses 12 repeaters in a planned chain.
Can the operator see all the wheels at once?
Yes, on a 7-inch colour display in the cab, with alarms replacing the walk-around check. Machines with two driving positions get two displays.
What happens when a tire alarms during a move?
The alarm appears on the cab display immediately. Thresholds are configured per machine, and the alarm can also be published on the vehicle bus so the controller can act on it.
Do you need the axle layout to quote?
Yes — a drawing or an axle plan is the fastest way. Wheel count, rim type, operating voltage and the receiving controller is enough for us to propose a configuration.
Is a 160-wheel system one receiver or several?
Several. The delivered configuration is 2 receivers with 2 × 7-inch displays, 12 repeaters and 160 sensors.
Send us the axle layout
A drawing or axle plan is enough for us to size the receivers, plan repeater placement and count the sensors. We have done 160 and 224 wheels.