Riken All Season Suv 235/55 R21

Riken All Season Suv is a tyre made in total of 33 sizes, ranging from R15 to R15 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 235/55 R21 is 30mm wider than the narrowest dimension (205) and 0mm narrower than the widest one (235). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (235mm), which results in 129.25mm sidewall height.