Last Sunday's run through the Adelaide hills resulted in two front tyres with no tread on the inside edge. Definitely time for a wheel alignment. However I have now discovered that 215/45/16 tyres are as rare as rocking horse poo. Does any one have any leads or should I lower the front by 6mm with 205/45/16, or raise by about the same amount with 205/50/16 tyres? Both these sizes are readily available.