Tire RFID Tag and TPMS Transmission
it’s a combined solution:
A single embedded tire tag that combines low-frequency RFID activation with high-frequency TPMS data transmission—enabling reliable identification, pressure monitoring, and temperature sensing throughout the tire’s entire lifecycle.
Introduction
Tire management has long faced a fundamental challenge: how to reliably identify and monitor each tire from manufacturing through retreading and eventual disposal. Traditional barcodes degrade, sidewall markings become illegible, and standalone TPMS sensors lack permanent tire identity. Our dual-frequency tire RFID tag solves this by integrating two proven wireless technologies into one durable embedded component.
The tag operates on two distinct frequency bands, each serving a specific function:
125kHz Low-Frequency Interface (Wake-Up)
The 125kHz LF channel serves as the activation and configuration link. When an external reader—whether a handheld device or fixed gate—transmits a 125kHz signal, the tag’s LF coil harvests energy and wakes the internal circuitry . This frequency was specifically chosen for its ability to penetrate tire rubber and resist environmental interference such as mud, snow, and moisture . Goodyear’s early adoption of 125kHz for tire identification validated this approach: while shorter in read range, LF signals remain reliable in conditions that degrade higher-frequency alternatives .
The LF interface also supports programming operations. Tire ID codes, manufacturing data, and calibration parameters can be written to the tag’s memory through the same 125kHz link .
433.92MHz Ultra-High-Frequency Transmission (TPMS Data)
Once activated, the tag’s 433.92MHz transmitter delivers sensor data to external receivers . This frequency falls within the globally recognized ISM band and is widely used for TPMS communications, enabling compatibility with existing vehicle receivers and handheld tools .
The 433.92MHz channel carries:
- Tire pressure (cavity pressure measurements)
- Temperature readings from within the tire
- Unique tire ID for identification and tracking
- Status flags for battery level, tamper detection, or threshold alerts
TPMS receiver and Tire RFID tag Reader
TPMS receiver: GPS tracker, TPMS receiver display, TPMS receiver module
RFID receiver: Tire tag reader
Dual-Frequency Advantages
| Feature | Benefit |
|---|---|
| 125kHz activation | Reliable wake-up through rubber; resistant to mud/snow interference |
| 433.92MHz data | Compatible with existing TPMS receivers and fleet tools |
| Single embedded tag | No external components to damage or lose |
| Lifecycle persistence | ID remains readable through manufacturing, retreading, and disposal |
| Sensor integration | Direct pressure/temperature measurement without separate TPMS module |
The architecture mirrors established designs in the tire industry. Goodyear’s Tire IQ System paired 125kHz RFID with pressure/temperature sensing, while later patents describe integrated RFID-TPMS systems where the tag and sensor share data through an interface . Our implementation refines this concept with 433.92MHz transmission optimized for both vehicle receivers and handheld readers.
Fleet Operations: Handheld readers can activate any tire’s 125kHz interface, then receive pressure and temperature data via 433.92MHz—all without removing the tire or approaching each wheel individually.
Manufacturing and Logistics: Automated gates can identify tires during production, storage, and shipment. The permanent ID survives retreading and remains readable at end-of-life for recycling verification .
Vehicle Integration: The 433.92MHz output integrates with existing TPMS receiver infrastructure. Vehicle ECUs can associate pressure data with the tire’s permanent ID, eliminating the common problem of losing tire identity when a TPMS sensor is replaced .
Aftermarket and Service: Tire shops equipped with 433MHz readers can scan tires for pressure, temperature, and history—enabling proactive maintenance and accurate inventory management.
Durability and Reliability
The tag is designed for embedding within the tire structure, subject to the same harsh conditions as the tire itself: temperature extremes from -40°C to +125°C, continuous flexing, and exposure to road chemicals. The passive LF interface eliminates battery concerns for the activation function, while the UHF transmitter operates on harvested or stored energy
By combining 125kHz reliability with 433.92MHz compatibility, this dual-frequency tire tag delivers what single-technology solutions cannot: permanent identification that integrates with existing TPMS infrastructure, all in one embedded component. For fleets, manufacturers, and service networks, it represents a practical path toward complete tire lifecycle visibility.
