185/65 R14 doesn't belong to the most popular dimensions for allround tyres - there are 21 tyre models available, which can be compared to 175/70 R13, 155/65 R13, 155/80 R13. Let's break down the sizing - 65 is height of the tyre, which is calculated as 65% of the tyre width (185mm), which means the sidewall height has 120.25 mm. The wheel diameter is R14, which means it fits to a 14 inch/355.6mm diameter wheel. The total circumference of the tyre is 1872.7 mm, which is very similar to 205/40 R17(1871.76 mm), 195/55 R15(1870.82 mm), 165/65 R15(1870.82 mm), 165/80 R13(1866.73 mm), 215/45 R16(1884.64 mm), 175/70 R14(1886.84 mm), 185/50 R16(1857.94 mm). There are multiple speed indexes available for allround tyres in 185/65 R14: H(210km/h), T(190km/h). The same goes for weight indexes: 86, 90.