245/45 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 - 45 is height of the tyre, which is calculated as 45% of the tyre width (245mm), which means the sidewall height has 110.25 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 155/60 R15
(1781.28 mm), 235/85 R16
(2531.81 mm), 160/60 R17
(1959.73 mm), 245/40 R19
(2131.88 mm), 165/70 R13
(1763.06 mm), 245/50 R19
(2285.82 mm), 175/65 R13
(1752.07 mm).
