# 7322 / Lateral Tyre Characterization: Rolling Tyre Vs Static Tyre Testing ## Authors Carl Becker and Schalk Els {% hint style="info" %} Paper presented at ISTVS 2024 | 21st International and 12th Asia-Pacific Regional Conference of the ISTVS\ Keywords: Tyre characterization; tyre stiffness; field testing; laboratory testing; large tyres\ {% endhint %} ## Abstract Tyre models used in soft soil simulation analysis requires tyre parameters in the form of stiffness in multiple directions. These parameters are obtained from measurements on hard terrain as these parameters are a function of the tyre carcass construction. Vehicles used on soft terrain are also used on hard terrain. Many off-road vehicles used in construction, mining, agriculture and forestry use large tyres operating under heavy loads. Testing of large tyres is not a trivial or inexpensive exercise and outdoor testing has limitations on repeatability and load application. This is the case for testing on soft terrain/soil and hard terrain, thus it is preferred to conduct laboratory tests when characterizing tyres as higher loads can be applied and conditions can be controlled. This study investigates the lateral tyre characteristics measured during dynamic/rolling and static tyre tests. Tests are conducted on the actual concrete surface of interest, typically used in field tests with the use of a Dynamic Tyre Test Trailer. Static tests are conducted on the same tyre over representative surfaces in a laboratory with the use of the Static Tyre Test Rig. Multiple tyres are tested and measured tyre characteristics compared. The data can be used to parameterize tyre models of special, large off-road tyres. *** Full paper purchase: \ ISTVS members receive three complimentary papers per year: --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://2024.istvs.org/submissions/papers/7322.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.