While being somehow dated as it was introduced back in 2015, it received some midlife updates and still holds up with the current models, at least in smaller dimensions. At the right price, it could be a great choice.
225/70 R16 doesn't belong to the most popular dimensions for winter tyres - there are 26 tyre models available, which can be compared to 165/65 R15, 165/65 R14, 155/70 R13. Let's break down the sizing - 70 is height of the tyre, which is calculated as 70% of the tyre width (225mm), which means the sidewall height has 157.5 mm. The wheel diameter is R16, which means it fits to a 16 inch/406.4mm diameter wheel. The total circumference of the tyre is 2266.34 mm, which is very similar to 195/55 R20(2269.8 mm), 265/40 R20(2261.95 mm), 235/45 R20(2260.38 mm), 265/35 R21(2258.49 mm), 225/65 R17(2275.46 mm), 265/30 R22(2255.04 mm), 215/80 R15(2277.65 mm). There are multiple speed indexes available for winter tyres in 225/70 R16: H(210km/h), Q(160km/h), S(180km/h), T(190km/h). The same goes for weight indexes: 102, 103, 107. You can find 225/70 R16 on 7 car models - mainly Jeep, Hyundai, Kia, Opel, Suzuki.