Bridgestone Potenza S001 is a summer tyre made in total of 151 sizes, ranging from R17 to R17 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 245/30 R20 is 40mm wider than the narrowest dimension (205) and 60mm narrower than the widest one (305). This tyre profile of 30 means the sidewall height of the tyre is 30% of the tyre width (245mm), which results in 73.5mm sidewall height. In 245/30 R20, there is only one possible speed index for Bridgestone Potenza S001 - "Y", which is good for speeds up to 300 km/h. In 245/30 R20, Potenza S001 usually competes against Ventus S1 evo3 K127, which is a tyre from Hankook with a rating of 82%, compared to 0% of the Bridgestone in question. Latest test in 245/30 R20 was held by Autobild in 2018, where Potenza S001 received rating "Satisfactory" and finished on the 6. place. It was tested on a .