Bridgestone DriveGuard 205/50 R17

Bridgestone DriveGuard is a summer tyre made in total of 20 sizes, ranging from R15 to R15 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 205/50 R17 is 20mm wider than the narrowest dimension (185) and 40mm narrower than the widest one (245). This tyre profile of 50 means the sidewall height of the tyre is 50% of the tyre width (205mm), which results in 102.5mm sidewall height.