Comparison: Semperit Speed-Life 2 vs. Firestone Roadhawk vs. Kumho Ecsta PS71 vs. GoodYear Efficientgrip Performance 2 vs. Pirelli P ZERO PZ4

When it comes to the comparison between high-performance summer tyres, the Semperit Speed-Life 2 and Firestone Roadhawk stand out in their respective ways. Both these tyres have been put through various tests to gauge their capabilities.

Made by Semperit, the Speed-Life 2 is a popular summer tyre known for its prowess on both dry and wet tracks. However, it's important to note that this model has been replaced by the newer Semperit Speed-Life 3. Despite this, the Speed-Life 2 managed to hold its ground during the ADAC tyre tests, securing the 6th position out of 16 entries.

In the Autobild testing regimen, the Speed-Life 2 ended up at the 30th position out of 53 tyres tested. Clearly, it has shown strong characteristics in certain aspects while falling short in others, making it a good pick for those who are more inclined towards the brand or certain specific features.

On the other hand, the Firestone Roadhawk, from the stable of Firestone, performed remarkably well, especially when compared to the Speed-Life 2. Scoring a 59% in our rating, the Roadhawk made its mark in the ADAC tests by securing the 4th position, thus outperforming the Speed-Life 2.

Even in Autobild tests, this tyre ended up in a respectable 13th position out of 53. Evidently, the Firestone Roadhawk's testing performance across the board is noteworthy for a summer tyre, and it is a more than a reliable choice for consumers.

All in all, in terms of mutual tests positions, the Firestone Roadhawk has a clear edge over the Semperit Speed-Life 2. Therefore, based on the provided data and test results, the Roadhawk is the better performer overall, of the two tyres.

To summarise, while Speed-Life 2 has had its own strengths, it didn't fare as well as the Firestone Roadhawk in the tests. The Roadhawk, with impressive test results and a reputable manufacturer, comes out as a more preferable choice. Bear in mind, however, that the Speed-Life 2 has been updated to Speed-Life 3, so potential buyers may want to consider the updated model for improved features and performance.