145/80 R13 doesn't belong to the most popular dimensions for winter tyres - there are tyre models available, which can be compared to
325/30 R21,
155/60 R15,
155/65 R13. Let's break down the sizing - 80 is height of the tyre, which is calculated as 80% of the tyre width (145mm), which means the sidewall height has 116 mm. The wheel diameter is R13, which means it fits to a 13 inch/330.2mm diameter wheel. The total circumference of the tyre is mm, which is very similar to 225/55 R16
(2054.29 mm), 295/35 R20
(2244.67 mm), 225/65 R16
(2195.66 mm), 315/30 R22
(2349.28 mm), 235/40 R17
(1947.16 mm), 235/50 R18
(2174.61 mm), 235/60 R18
(2322.27 mm). There are multiple speed indexes available for winter tyres in 145/80 R13: Q
(160km/h), T
(190km/h). The same goes for weight indexes: 74, 75.
