Continental Contisportcontact 5P 285/30 R21

Continental Contisportcontact 5P is a summer tyre made in total of 69 sizes, ranging from R13 to R13 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 285/30 R21 is 60mm wider than the narrowest dimension (225) and 40mm narrower than the widest one (325). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (285mm), which results in 85.5mm sidewall height.