Radar Dimax Alpine is a winter tyre made in total of 27 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/40 R18 is 30mm wider than the narrowest dimension (195) and 30mm narrower than the widest one (255). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (225mm), which results in 90mm sidewall height. In 225/40 R18, there is only one possible speed index for Radar Dimax Alpine - "V", which is good for speeds up to 240 km/h. In 225/40 R18, Dimax Alpine usually competes against WinTech, which is a tyre from Viking with a rating of 53%, compared to 53% of the Radar in question.
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Relevant tyre tests in same or similiar dimension (225/40 R18)

| Name | Stopping distance on wet | Stopping distance on snow | |||||
|---|---|---|---|---|---|---|---|
| Best values in test | 31,4 | 29,2 | |||||
| Radar Dimax Alpine | 36,8 | 30,6 | |||||
| Show test details | |||||||