The combination of fabrics with unique electrical properties and miniaturized electronics make it possible to integrate textile sensors into wearable clothing. The applications are diverse and range from sweat detection and the measurement of vital parameters via textile electrodes to measuring the applied pressure and tension on the textile. In this paper, we present a procedure for the characterization and evaluation of conductive textiles as strain sensors. We compare the behaviour of commercially available conductive textiles with our own solutions based on jersey and screen printed conductive particles. The coating composition and the effect on the resistance behaviour under tensile load is evaluated by long-term tests and defined load tests on a custom test bench. The measurements show that the number of conductive particles in the coating influences the resistance of the unstretched patch. No correlation was found between the spandex content and the characteristics of the textiles.