235/65 R16 doesn't belong to the most popular dimensions for winter tyres - there are 31 tyre models available, which can be compared to 190/50 R17, 185/70 R14, 165/65 R14. Let's break down the sizing - 65 is height of the tyre, which is calculated as 65% of the tyre width (235mm), which means the sidewall height has 152.75 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 2236.5 mm, which is very similar to 255/40 R20(2236.81 mm), 255/45 R19(2237.13 mm), 215/65 R17(2234.61 mm), 285/40 R19(2232.42 mm), 235/60 R17(2242.47 mm), 205/75 R16(2242.78 mm), 295/35 R20(2244.67 mm). There are multiple speed indexes available for winter tyres in 235/65 R16: R(170km/h), S(180km/h). The same goes for weight indexes: 115, 118, 121. You can find 235/65 R16 on 9 car models - mainly Rolls-Royce, VW Commercial, Ford, Mercedes-Benz, Nissan.