345/35 R19 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 (345mm), which means the sidewall height has 120.75 mm. The wheel diameter is R19, which means it fits to a 19 inch/482.6mm diameter wheel. The total circumference of the tyre is 2274.83 mm, which is very similar to 225/65 R17(2275.46 mm), 215/80 R15(2277.65 mm), 195/55 R20(2269.8 mm), 275/35 R21(2280.48 mm), 225/70 R16(2266.34 mm), 225/60 R18(2284.57 mm), 245/50 R19(2285.82 mm).