Aplus A610 315/40 R21

Aplus A610 is a summer tyre made in total of 101 sizes, ranging from R15 to R15 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 315/40 R21 is 110mm wider than the narrowest dimension (205) and -40mm narrower than the widest one (275). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (315mm), which results in 126mm sidewall height.