Stringent emission standards and the general trend towards more efficient, resource-saving engines are key drivers for innovation and advancements in plain bearing technology. Among other things, the start-stop function in internal combustion engines presents an opportunity to save fuel, but also subjects the plain bearings to increased wear. Modern bearing material composites with specialized running layers, in combination with high-performance lubricating oils, aim to achieve longer service life due to improved mixed friction properties. This creates significant technological interest in the wear evolution of various oil-bearing pairings to maximize the lifespan. In this study, two concepts for in-situ wear measurement using an advanced tribometer for wear tests on plain bearing shells are implemented and evaluated. For both measurement concepts, a high-resolution, inductive displacement sensor is used, which is mounted in two different positions on the plain bearing shell adapter. The recording of the cumulative movements of both halves of the bearing shells takes place at position 1, while at position 2, only the movement of a single bearing shell is recorded. Additionally, the sensor at position 2 is significantly closer to the shaft-bearing shell interface. The qualification and quantification of the measurement data quality through various test types show that there is high dynamic movement throughout the plain bearing shell adapter of the tribometer, and that thermal displacements due to oil bath temperatures of 120 °C during the test procedure also have a significant impact on the feasibility of in-situ wear measurement. To ensure alignment with the wear values measured after the test, the tests are only started after the test cell has fully heated, which is typically completed after approximately 2.5 hours. Further investigations show that the measurement data for the critical start-stop tests at position 2 exhibit a 50 % lower scatter compared to position 1. To obtain even more accurate wear values for this testing method, only those data points at maximum shaft speed and minimal friction torque of each individual start-stop cycle are considered in post-processing. As a result, the wear values deviated by an average of only 16 % or 4 µm from the reference measurements. It is also demonstrated that the measurement system at position 2 can be suitable for measuring the minimum lubrication film thickness, as the data deviated by less than 12 % or 1 µm from numerical simulation results on average. The results and insights of this work can serve as a foundation for future ideas in in-situ wear measurement on tribometers and advance concepts towards even more precise measurements.