Kumho Ecsta PS71 SUV is a summer tyre made in total of 55 sizes, ranging from R17 to R17 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 265/40 R21 is 50mm wider than the narrowest dimension (215) and 20mm narrower than the widest one (285). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (265mm), which results in 106mm sidewall height. In
265/40 R21, Ecsta PS71 SUV usually competes against
Dynaxer HP5, which is a tyre from
Kleber with a rating of 51%, compared to 59% of the
Kumho in question.