185/80 R13 doesn't belong to the most popular dimensions for 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 (185mm), which means the sidewall height has 148 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 235/75 R15
(2304.36 mm), 160/60 R15
(1800.13 mm), 245/40 R18
(2052.09 mm), 165/65 R15
(1870.82 mm), 245/50 R18
(2206.03 mm), 175/60 R15
(1856.68 mm), 245/75 R16
(2431.28 mm).
