215/40 R16 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 - 40 is height of the tyre, which is calculated as 40% of the tyre width (215mm), which means the sidewall height has 86 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 mm, which is very similar to 200/55 R17
(2047.69 mm), 265/60 R18
(2435.36 mm), 205/50 R17
(2000.57 mm), 275/30 R20
(2114.29 mm), 205/65 R16
(2113.98 mm), 275/40 R20
(2287.08 mm), 215/45 R17
(1964.44 mm).
