Blizzak has always been a winter tire focused on wet conditions, but with its sixth model, Bridgestone has promised improved snow performance and reduced rolling resistance. Early tests suggest they have delivered on these promises—Blizzak 6 is unmatched in wet conditions and excels on snow, making it ideal not just for city climates.
The UltraGrip Performance 3 is one of the best tyres we have seen in the tests and on top of that it's top discipline is snow performance while maintaining great properties on wet, which makes it a great candidate for snowy climates.
Wintrac Pro is a winter option from a dutch manufacturer that is getting a bit outdated, but on wet and dry roads it still holds up with the premium segment. It has some
minor weaknesses on snow, but for a lower than premium price it could be a good deal.
315/35 R21 doesn't belong to the most popular dimensions for winter tyres - there are 0 tyre models available, which can be compared to 155/60 R15, 170/60 R17, 160/60 R14. Let's break down the sizing - 35 is height of the tyre, which is calculated as 35% of the tyre width (315mm), which means the sidewall height has 110.25 mm. The wheel diameter is R21, which means it fits to a 21 inch/533.4mm diameter wheel. The total circumference of the tyre is 2368.45 mm, which is very similar to 275/40 R21(2366.88 mm), 245/50 R20(2365.62 mm), 275/45 R20(2373.47 mm), 265/70 R15(2362.48 mm), 245/60 R18(2359.96 mm), 245/65 R17(2357.14 mm), 285/35 R22(2382.27 mm). There are multiple speed indexes available for winter tyres in 315/35 R21: T(190km/h), V(240km/h), W(270km/h). The same goes for weight indexes: 111.