In this comparison, we are comparing a tyre from a manufacturer from (Riken) against a tyre from a manufacturer from Austria (Semperit). Semperit is a brand that belongs to the Continental group. Generally, Semperit winter tyres are slightly better rated (75%) than Riken (18%). But when it comes to comparing Riken Snowtime b2 and Semperit Speed-Grip 3, the rating is the same - 0%. The first tyre test of Riken Snowtime b2 was done in 2015, compared to 2017 when was the Semperit Speed-Grip 3 first tested. Important for this comparison is also the Autobild 2017 225/50 R17 test, where both the Snowtime b2 and the Speed-Grip 3 were tested.