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DOTZ & TPMS
Advantage through know-how – wheels by DOTZ are 100% TPMS-FIT
Since 1st November 2014, the new EU Tyre Pressure Monitoring System (TPMS) Directive applies to all newly registered cars. All DOTZ wheels have already been prepared to accommodate the necessary wireless sensors (direct TPMS) and the relevant information have been recorded in TÜV certificates since the beginning of 2012.
Read here about what the four letters TPMS stand for in detail and what it means for you.
In addition DOTZ business clients will find basic information about the advantage of the TPMS all-in-one solution with comprehensive service offered by the ALCAR group.
TPMS Training Videos
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TPMS Carefree Package
Overview of our comprehensive range for business clients.
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TPMS Compatibility List
Our service for you: Which TPMS sensors fit which DOTZ wheels?
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What is TPMS?
Pressure Monitoring Systems (TPMS) are vehicle-integrated systems which continuously monitor the tyre pressure. There are two different system types; the direct system (measuring the tyre pressure via a sensor in the wheel) and the indirect system (measuring via the vehicle’s ABS sensor). A display inside the vehicle informs the driver if one or more tyres lose pressure.
TPMS fulfil three functions:
• Increased driving safety
• Avoiding higher fuel consumption caused by wrong tyre pressure
• Avoiding high tyre wear which is caused by reduced tyre pressure
TPMS LEGAL REQUIREMENTS
Which legal requirements must TPMS fulfil?
Since 1st November 2014: according to the EU Directive, all new cars must be equipped with a TPMS by the vehicle manufacturers. However, the EU Directive does not stipulate which tyre pressure monitoring system should be used. Permitted are direct as well as indirect systems as long as they fulfil the requirements and conditions of ECE-R 64. ECE-R64 only stipulates the functionality but not whether an original or aftermarket sensor is required.
Important: A TPMS found not to be in proper working order during the annual TÜV is classed as a minor defect and must be rectified by the vehicle owner immediately.
TPMS & PURCHASING WHEELS
What should I look for when purchasing wheels?
If your vehicle is already equipped with a TPMS then you need to establish whether it is a direct or indirect system. In case that your vehicle is equipped with an indirect TPMS then you can purchase your wheels as per usual as this will not affect your TPMS.
If your TPMS is a direct system then you should look for the following when purchasing wheels:
1. Does the wheel design of your choice fulfil all requirements for fitting a
2. Due to the complex technology of the TPMS, we recommend to use a
specialist dealer. They have the relevant special tools and programming
equipment for changing tyres, maintenance work and for any other
problems (e.g. warning on the display)!
All DOTZ wheels have already been prepared to accommodate the necessary wireless sensors (direct TPMS) and the relevant information have been recorded in TÜV certificates since the beginning of 2012. Therefore, the purchase of wheels is easy because nothing changes for DOTZ customers.
Technical details and effects of TPMS on maintenance and service
What are the differences between a direct and an indirect system?
A direct system measures the tyre pressure via a sensor integrated in the wheel. This information is wirelessly transferred to a control device in the vehicle. Various displays of individual vehicle manufacturers enable the driver to read the current pressure values permanently or to receive just a warning when the tyre pressure is too low. Such systems are very precise since they directly monitor the pressure for each wheel.
How does an indirect TPMS work?
In an indirect TPM-System, the vehicle integrated ABS resp. traction sensors monitor individual wheel rotational speeds. Differences would occur if a pressure drop in the tires appears. In addition, pressure-dependent oscillations of the wheels are measured through advanced signal processing. A change will be considered a further indication of a loss of pressure.
What are the advantages and disadvantages of these systems?
A direct TPM-System allows for a very precise data collection and has additional functions like tyre position recognition, pressure loss detection when the vehicle is stationary and monitoring the tyre pressure of the spare wheel. A direct TPMS requires a significant extra effort and expenditure when changing tyres and during maintenance work. All tyres (summer, winter, spare) of a vehicle must be equipped with a properly working sensor.
An indirect TPMS is not as precise in its functionality since it neither measures the tyre pressure nor the tyre temperature. Also, it does not detect loss of pressure on the tyres when the vehicle is stationary.
What effects have TPM systems on maintenance and service?
The use of TPMS when driving and maintaining a vehicle poses new challenges for the driver and workshops alike:
The vehicle owner will not be able to simply change a tyre by himself but will need the help of a specially qualified dealer in order to fit, calibrate and check the sensor of wheels with a direct TPMS. Due to the EU-wide introduction of this technology, specialist dealers will train their staff and invest in the required equipment.
Can I fit tyres with direct TPMS myself?
Tyre mounting is a safety-relevant issue and requires expertise (check of a condition of the tire, use the correct tightening torque, ...). Therefore, we recommend this principle to only be carried out by a specialist dealer.
Direct TPM-Systems also bring the following new technical requirements:
• The need for maintenance of the valve and the gaskets with every wheel removal to prevent wear of
• For new tyres: new configuration of the sensors to the vehicle when new sensors (new sensor ID) are
used or amending the wheel position of the sensors in order to ensure the clear communication
between sensor and TPMS receiver
• The battery level of the sensors must be checked when changing tyres
My vehicle is not equipped with a TPMS. Do I now need to get a TPMS fitted?
Vehicles which are subject to the compulsory fitting of a TPMS will already be equipped with a direct or indirect TPMS by the vehicle manufacturer as otherwise the vehicle will not be given a type approval and/or certification in any of the EU member states.
A subsequent installation of a TPMS is not mandatory.
ALCAR TPMS INDUSTRY SOLUTION
TPMS – four letters – one solution: ALCAR!
A complex challenge – one solution
The DOTZ parent company ALCAR offers a customised industry solution. Sensors aside, the necessary assembly, diagnostic and programming tools, service and spare-part kits and a comprehensive support for all customers and partners will also be available. In addition all the necessary information and software updates can be found in the ALCAR member’s area online.
ALCAR’s know-how means advantage
The ALCAR group tackled the TPMS issue already early on and is therefore able to provide its customers with a complete TPMS package. Since 2012, the development of new wheel designs has taken into account the spatial parameters for an installation of common, directly measuring sensors and has been recorded in the TÜV certificates.
Wheels by ALCAR: 100 % TPMS-FIT
Dealers looking for a safe and well-shaped solution will be able to continue to recommend DOTZ and its partner brands AEZ, DEZENT, ENZO, ALCAR STAHLRAD and ALCAR HYBRIDRAD designs with a clear conscience. The TPMS sensors delivered by ALCAR will fit perfectly.