265/35 R21 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 - 35 is height of the tyre, which is calculated as 35% of the tyre width (265mm), which means the sidewall height has 92.75 mm. The wheel diameter is R21, which means it fits to a 21 inch/533.4mm diameter wheel. The total circumference of the tyre is mm, which is very similar to 285/40 R22
(2471.81 mm), 225/45 R17
(1992.71 mm), 295/30 R18
(1992.4 mm), 225/55 R18
(2213.88 mm), 295/40 R21
(2417.14 mm), 225/70 R15
(2186.55 mm), 325/25 R20
(2106.44 mm).
