DOTZ 4x4 supplies off-road wheels of the highest quality. This requires several steps and control processes to ensure that our wheels meet the highest quality standards. Starting with perfectly organized wheel development, whereby the wheels are already during the development phase by using finite element analysis are optimized in terms of weight and strength and later during the production process are checked for strength, dimensional accuracy and material properties , right through to renewed testing of all geometric and optical properties at the end of production.

All wheels are tested in advance by the TÜV for maximum loads in accordance with the German wheel or ECE guidelines. Even under extreme operating conditions, these test assumptions are never achieved in actual vehicle operation.

In the course of this, our steel wheels are tested with increased load on a rotating bending test facility. The wheel is subjected to 60.000 load cycles. Subsequently, the steel wheel is loaded with only slightly increased test load and about 600.000 load cycles. Our wheels are also subjected to a rolling test. In this test, the wheels are loaded on a further testing device and must withstand depending on tire dimension approximately further 500.000 load cycles. After all these test runs, the rim must not show even the slightest deviation! After positive completion of all test phases and approval by the KBA (German Federal Motor Transport Authority), our off-road steel rims are delivered to our customers worldwide.

Our internal quality standards, the test procedures, the continuous development and the long-time reliable performance of all our DOTZ 4x4 wheels result in a high customer satisfaction.

ISO certificate 9001

The company ALCAR Wheels GmbH, which develops and distributes the brand DOTZ 4x4, has been awarded the ISO 9001 certificate by the TÜV for its quality management. This certificate is confirmed every year and ensures consistent quality in the production processes and in customer service.