Bridgestone Alenza Sport All Season 285/45 R21

Bridgestone Alenza Sport All Season is a allround tyre made in total of 9 sizes, ranging from R19 to R19 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 285/45 R21 is 30mm wider than the narrowest dimension (255) and 30mm narrower than the widest one (315). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (285mm), which results in 128.25mm sidewall height.