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The paper presents some aspects of the experimental investigation of shear stresses in the tire-road contact patch. The rolling process is achieved by loading a freely rotating tire against a movable table. The rig structure, measuring stages, and special developed programs are mentioned. A comparison between treadless and pattern tread band design, pertaining to shear stress distribution, is presented. The influence of inflation pressure and normal force values on the shape and magnitude of the shear stresses is also shown.