135/80 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 (135mm), which means the sidewall height has 108 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 185/60 R14
(1814.58 mm), 255/50 R19
(2317.24 mm), 185/80 R14
(2047.06 mm), 255/65 R17
(2397.98 mm), 195/55 R15
(1870.82 mm), 265/35 R18
(2019.1 mm), 195/65 R16
(2073.14 mm).
