For a safe assessment of the car tyre durability, during the process of production, in follow-up inspections, in constant-wear tests or with accident tyres the knowledge about the rubber thickness at various positions of the tyre is of great importance. Of great interest is the rubber thickness to the steel mesh, the tread and under-tread thickness, the thickness inside under the tread, interior and exterior surface in the flank area as well as the rubber thickness on the beads.

The handy coating thickness gauge Surfix® Pro S-CT provides for within seconds precise measurement rubber thickness at all important positions of the tyre. The device uses the magnetic inductive principle according to DIN EN ISO 2178 and measures the distance of the probe to the steel mesh.

After simple calibration directly on the steel mesh of a reference tyre (of the same type), immediate measurement can then be made on the original tyre. All calibrations on various reference tyres can be stored and recalled at any later time thus avoiding any recalibration on reference tyres.

The combi-probe F30T is used for greater rubber thicknesses up to approximately 30 mm on the tread and for the measurement on the under-tread thickness up to approx. 10 mm. As opposed to this, the probes F10-1,2,3 are used for smaller rubber thicknesses, e.g. inside underneath the tread, or inside and outside on the side walls or on the beads.

Even the total thickness on side walls having a fabric carcass can be measured up to a thickness of 10 mm. To do this, the probe F10-cp is positioned outside at the required position on the side wall, during which time a steel plate or disk (about the size of a 2 Euro coin) is held opposite to the probe on the inside.