Continental ContiTour 170/80 R15

Continental ContiTour is a summer tyre made in total of 10 sizes, ranging from R15 to R15 - this particular dimension is R15, which means it fits to a 15 inch/381mm diameter wheel. 170/80 R15 is 30mm wider than the narrowest dimension (140) and 10mm narrower than the widest one (180). This tyre profile of 80 means the sidewall height of the tyre is 80% of the tyre width (170mm), which results in 136mm sidewall height.