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.
Hankook sneaked in between the traditional premium tyres again with its Icept Evo3. It excels in aquaplaning resistance, which is crucial for european winters.
285/30 R21 doesn't belong to the most popular dimensions for winter tyres - there are 7 tyre models available, which can be compared to 155/60 R15, 160/60 R18, 165/60 R14. Let's break down the sizing - 30 is height of the tyre, which is calculated as 30% of the tyre width (285mm), which means the sidewall height has 85.5 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 2212.94 mm, which is very similar to 225/55 R18(2213.88 mm), 275/45 R18(2213.88 mm), 245/40 R20(2211.68 mm), 245/35 R21(2214.51 mm), 215/75 R15(2210.11 mm), 245/45 R19(2208.85 mm), 275/40 R19(2207.28 mm). There are multiple speed indexes available for winter tyres in 285/30 R21: V(240km/h), W(270km/h). The same goes for weight indexes: 100.