The interaction between wheel-rail produced defects on each other. Many studies of wear were done using pin-on-disc tribometer on interaction between the wheels - rail. The present paper proposes analytical study on wear. Wear rates were determined using depth of wear prediction on the interaction surfaces between wheel-rail. This prediction has been validated using pin-on-disc experimental technique using normal load of 100 N. The results show that the predictive equation developed can be used to predict the actual wear rate. © (2012) Trans Tech Publications, Switzerland.