Bridgestone Alenza 001 235/50 R21

Bridgestone Alenza 001 is a summer tyre made in total of 96 sizes, ranging from R13 to R13 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 235/50 R21 is 20mm wider than the narrowest dimension (215) and 40mm narrower than the widest one (275). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (235mm), which results in 117.5mm sidewall height.