165/70 R13 doesn't belong to the most popular dimensions for allround tyres - there are 11 tyre models available, which can be compared to 175/55 R15, 170/80 R15, 325/30 R21. Let's break down the sizing - 70 is height of the tyre, which is calculated as 70% of the tyre width (165mm), which means the sidewall height has 115.5 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 1763.06 mm, which is very similar to 185/55 R14(1756.46 mm), 175/65 R13(1752.07 mm), 155/65 R14(1750.18 mm), 175/60 R14(1776.88 mm), 195/45 R15(1748.3 mm), 155/60 R15(1781.28 mm), 165/60 R14(1739.19 mm). There are multiple speed indexes available for allround tyres in 165/70 R13: T(190km/h). The same goes for weight indexes: 79, 83. You can find 165/70 R13 on 16 car models - mainly CITROËN, Ford, Mazda, Opel, Skoda.