Products for Car / Van / 4x4

R&D LABS

HIGH-TECH PRODUCT TIRES

ENDURANCE TESTING

The standard test is a marathon event in itself: the tires run in the test rig for over a month – up to 1,000 hours to be more precise – at a speed of 120 km/h. The Endurance Testing department has various drum test rigs that allow several car tires at a time to be put through their paces in a wide range of test positions.

endurance testing icon

The standard test is a marathon event in itself: the tires run in the test rig for over a month – up to 1,000 hours to be more precise – at a speed of 120 km/h.

high-speed test rigs

Endurance tests in many different test positions

A large number of drum test rigs conduct endurance testing on truck tires in a variety of test positions. There are also high-speed test rigs for testing car tires at speeds as high as around 400 km/h. Further test machines capable of applying high loads are available for testing truck tires and special agricultural and industrial tires. Endurance testing doesn’t look at how a tire wears but what it can actually withstand: When and why does it reach the limit of its structural endurance? In addition to high-speed testing, there are also burst, bead unseating and plunger tests, which are carried out to ensure and document compliance with all regulatory requirements. On top of this, internal testing beyond the limits of structural endurance is also routinely carried out.

preliminary inspection of the tyre

The Endurance Testing department

Endurance Testing is one of the largest test departments within the R&D arm of Continental Tires. This is where prototypes for new tire developments as well as random samples from ongoing production are taken for endurance testing. This involves a preliminary inspection of the tire before it is fitted onto a special wheel rim. The tire is conditioned, i.e. pumped up to the required test pressure and brought up to temperature, before being mounted on the test rig for testing at the desired load and speed. The tire is regularly inspected over the course of the test run, after which it is sent to the internal analysis group where it is not only cut open, but also undergoes X-ray or CT scanning. The investigations shed light on where the tire failed structurally and why.

 

Endurance Testing is one of the largest test departments within the R&D arm of Continental Tires. 

 

Way beyond the speed symbol

The high-speed tests are of particular interest for car and van tires. These involve testing the tires under conditions that comfortably exceed their speed rating symbol in order to ensure that the tire is fit for the market. The test results are evaluated by the tire analysis specialists and fed back into the tire development process.

The findings from endurance testing provide vital guidance in product development, helping to make sure that work is progressing in the right direction when creating future tire models. Quality management testing for current models accounts for around 25 to 30 percent of the test runs. Most test jobs originate from product and platform development and mainly involve original equipment tires and tires for the replacement market.

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