Bridgestone Battlax BT-45 is a summer tyre made in total of 40 sizes, ranging from R16 to R16 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. is 20mm wider than the narrowest dimension (100) and -20mm narrower than the widest one (100). This tyre profile of 90 means the sidewall height of the tyre is 90% of the tyre width (120mm), which results in 108mm sidewall height. In , there is only one possible speed index for Bridgestone Battlax BT-45 - "V", which is good for speeds up to 240 km/h.