In this comparison, we are comparing a tyre from a manufacturer from (
Triangle) against a tyre from a manufacturer from Italy (
Pirelli). Generally,
Pirelli winter tyres are slightly better rated (71%) than
Triangle (15%). In this particular case, the Pirelli P ZERO PZ4 has a better rating of 91% compared to 7% of the Triangle EffeXWinter TW421. The first tyre test of Triangle EffeXWinter TW421 was done in 2025, compared to 2017 when was the Pirelli P ZERO PZ4 first tested.