To have the most objective and independent results, these organizations carry out all these tests with tyres purchased on the market, with professional pilots, in stable weather conditions, with the same vehicle, the same methodology, on the same track, the same day. All this to limit as much as possible the external influences on the results.
The test conditions are monitored and standardized.
Reference tyres are tested and retested before and after each series to ensure the stability of the results under these conditions.