Bridgestone Turanza Eco 235/45 R21

Bridgestone Turanza Eco is a summer tyre made in total of 37 sizes, ranging from R15 to R15 - this particular dimension is R21, which means it fits to a 21 inch/533.4mm diameter wheel. 235/45 R21 is 50mm wider than the narrowest dimension (185) and 20mm narrower than the widest one (255). This tyre profile of 45 means the sidewall height of the tyre is 45% of the tyre width (235mm), which results in 105.75mm sidewall height.