Same tire, very different readings in the test

Hello, the car, engine and sport tested eleven summer tyres in one of their last editions, when 205/55 R16 V. The Bridgestone Turanza T001 was also there. 2014: The wet brake path from 100 km/h to standstill was 65.3 meters. A year ago the car, engine and sport had already tested the Bridgestone Turanza T001. Test size was 205/55 R16 V. 2013: The wet brake path from 100 km/h to standstill was 49.4 meters. The same tire in the same size, and then a Br In the test from this March the difference between the best and the worst wet brake in the test (Conti Premium Contact 5 and GT Radial Champiro VP1) was only 14.1 meters. This time the Bridgestone only landed on the 9th and thus third last place, “gravious weaknesses in wet brake”. A year ago he was still in fifth place, “brake level only average”. I’m not talking about the Bridgestone, it could also be a But, does anyone have a plausible explanation for these different braking distances? A little different temperatures or so shouldn’t be enough for such a difference. Oh, the Conti Premium Contact 5 was also present in both tests. Wet brake path 2013: 48.8 meters Wet brake path 2014: 51.9 meters MfG, Tazio1935