Star Performer UHP-3 is a summer tyre made in total of 32 sizes, ranging from R15 to R15 - this particular dimension is R20, which means it fits to a 20 inch/508mm diameter wheel. 245/30 R20 is 50mm wider than the narrowest dimension (195) and 70mm narrower than the widest one (315). 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 Star Performer UHP-3 - "Y", which is good for speeds up to 300 km/h.
Relevant tyre tests in same or similiar dimension (245/30 R20)
Autobild Summer tyre test 2022 245/40 R19 not recommended Ranked #10 of 10The Star Performer UHP-3 finished at the bottom, ranking 10th out of 10 competitors in its evaluation. Despite its advantages such as respectable aquaplaning resistance, low cost, and reduced rolling resistance, the tyre was ultimately given a final rating of 'Not recommended'. Critical feedback noted the tyre's dangerously long braking distances and inadequate grip on wet surfaces, delayed steering response, and vague handling characteristics. These significant drawbacks overshadowed its positive aspects, casting doubts on its overall performance and safety capabilities.