Goodyear Vector All Season 4 235/40 R20

Goodyear Vector All Season 4 is a allround tyre made in total of 91 sizes, ranging from R16 to R16 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 235/40 R20 is 30mm wider than the narrowest dimension (205) and 50mm narrower than the widest one (285). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (235mm), which results in 94mm sidewall height.