Goodyear Ultragrip Performance+ Suv is a winter tyre made in total of 35 sizes, ranging from R17 to R17 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 285/40 R21 is 70mm wider than the narrowest dimension (215) and -10mm narrower than the widest one (275). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (285mm), which results in 114mm sidewall height. In
285/40 R21, Ultragrip Performance+ Suv usually competes against
WinterContact TS 850P SUV, which is a tyre from
Continental with a rating of 0%, compared to 0% of the
Goodyear in question.