GoodYear Vector 4Seasons Gen-3 245/40 R21

GoodYear Vector 4Seasons Gen-3 is a allround tyre made in total of 209 sizes, ranging from R14 to R14 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 245/40 R21 is 70mm wider than the narrowest dimension (175) and 20mm narrower than the widest one (265). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (245mm), which results in 98mm sidewall height.