GT radial Sport Active 2 is a summer tyre made in total of 20 sizes, ranging from R16 to R16 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 245/40 R18 is 50mm wider than the narrowest dimension (195) and 20mm narrower than the widest one (265). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (245mm), which results in 98mm sidewall height. In 245/40 R18, there is only one possible speed index for GT radial Sport Active 2 - "Y", which is good for speeds up to 300 km/h. In 245/40 R18, radial Sport Active 2 usually competes against Ventus S1 evo3 K127, which is a tyre from Hankook with a rating of 80%, compared to 61% of the GT in question.
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Relevant tyre tests in same or similiar dimension (245/40 R18)

| Name | Wet | Dry | Enviromental impact | ||||
|---|---|---|---|---|---|---|---|
| Best values in test | 9,0 | 9,7 | 9,4 | ||||
| GT radial Sport Active 2 | 6,7 | 7,0 | 7,2 | ||||
| Show test details | |||||||