Can i ask, when you look at the wear of your tyres, do u look at the wear indicators alone. I notice the indicators on some tyres are mainly along the centre grooves, the edges of the tyres don't have much thread depth at all (as seen in the pic). Say you don't have any uneven wear, but the edges looks worn (due to small depth to begin with), the centre of the tyres have heaps of life left, do u go by the centre?.