Dunlop D404 is a allround tyre made in total of 40 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 40mm wider than the narrowest dimension (130) and -70mm narrower than the widest one (100). 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. In 170/80 R15, there are 2 possible speed indexes for Dunlop D404 - "H","S", which are good for speeds up to 210, 180 km/h.
