195/40 R16 doesn't belong to the most popular dimensions for summer tyres - there are 4 tyre models available, which can be compared to
155/60 R15,
170/60 R17,
160/60 R14. Let's break down the sizing - 40 is height of the tyre, which is calculated as 40% of the tyre width (195mm), which means the sidewall height has 78 mm. The wheel diameter is R16, which means it fits to a 16 inch/406.4mm diameter wheel. The total circumference of the tyre is 1766.83 mm, which is very similar to 165/70 R13
(1763.06 mm), 175/60 R14
(1776.88 mm), 185/55 R14
(1756.46 mm), 155/60 R15
(1781.28 mm), 175/65 R13
(1752.07 mm), 155/65 R14
(1750.18 mm), 195/45 R15
(1748.3 mm). There are multiple speed indexes available for summer tyres in 195/40 R16: V
(240km/h), W
(270km/h). The same goes for weight indexes: 80, 107.
